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lib/fdtdec.c
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// SPDX-License-Identifier: GPL-2.0+ |
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/* * Copyright (c) 2011 The Chromium OS Authors. |
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*/ |
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#ifndef USE_HOSTCC |
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#include <common.h> |
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#include <boot_fit.h> |
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#include <dm.h> |
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#include <dm/of_extra.h> |
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#include <errno.h> |
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#include <fdtdec.h> |
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#include <fdt_support.h> |
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#include <mapmem.h> |
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#include <linux/libfdt.h> |
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#include <serial.h> |
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#include <asm/sections.h> |
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#include <linux/ctype.h> |
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#include <linux/lzo.h> |
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DECLARE_GLOBAL_DATA_PTR; /* * Here are the type we know about. One day we might allow drivers to * register. For now we just put them here. The COMPAT macro allows us to * turn this into a sparse list later, and keeps the ID with the name. |
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* * NOTE: This list is basically a TODO list for things that need to be * converted to driver model. So don't add new things here unless there is a * good reason why driver-model conversion is infeasible. Examples include * things which are used before driver model is available. |
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*/ #define COMPAT(id, name) name static const char * const compat_names[COMPAT_COUNT] = { |
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COMPAT(UNKNOWN, "<none>"), |
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COMPAT(NVIDIA_TEGRA20_EMC, "nvidia,tegra20-emc"), COMPAT(NVIDIA_TEGRA20_EMC_TABLE, "nvidia,tegra20-emc-table"), |
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COMPAT(NVIDIA_TEGRA20_NAND, "nvidia,tegra20-nand"), |
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COMPAT(NVIDIA_TEGRA124_XUSB_PADCTL, "nvidia,tegra124-xusb-padctl"), |
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COMPAT(NVIDIA_TEGRA210_XUSB_PADCTL, "nvidia,tegra210-xusb-padctl"), |
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COMPAT(SMSC_LAN9215, "smsc,lan9215"), COMPAT(SAMSUNG_EXYNOS5_SROMC, "samsung,exynos-sromc"), |
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COMPAT(SAMSUNG_EXYNOS_USB_PHY, "samsung,exynos-usb-phy"), |
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COMPAT(SAMSUNG_EXYNOS5_USB3_PHY, "samsung,exynos5250-usb3-phy"), |
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COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"), |
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COMPAT(SAMSUNG_EXYNOS_MIPI_DSI, "samsung,exynos-mipi-dsi"), |
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COMPAT(SAMSUNG_EXYNOS_DWMMC, "samsung,exynos-dwmmc"), |
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COMPAT(GENERIC_SPI_FLASH, "spi-flash"), |
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COMPAT(SAMSUNG_EXYNOS_SYSMMU, "samsung,sysmmu-v3.3"), |
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COMPAT(INTEL_MICROCODE, "intel,microcode"), |
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COMPAT(INTEL_QRK_MRC, "intel,quark-mrc"), |
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COMPAT(ALTERA_SOCFPGA_DWMAC, "altr,socfpga-stmmac"), |
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COMPAT(ALTERA_SOCFPGA_DWMMC, "altr,socfpga-dw-mshc"), |
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COMPAT(ALTERA_SOCFPGA_DWC2USB, "snps,dwc2"), |
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COMPAT(INTEL_BAYTRAIL_FSP, "intel,baytrail-fsp"), COMPAT(INTEL_BAYTRAIL_FSP_MDP, "intel,baytrail-fsp-mdp"), COMPAT(INTEL_IVYBRIDGE_FSP, "intel,ivybridge-fsp"), |
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COMPAT(COMPAT_SUNXI_NAND, "allwinner,sun4i-a10-nand"), |
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COMPAT(ALTERA_SOCFPGA_CLK, "altr,clk-mgr"), COMPAT(ALTERA_SOCFPGA_PINCTRL_SINGLE, "pinctrl-single"), COMPAT(ALTERA_SOCFPGA_H2F_BRG, "altr,socfpga-hps2fpga-bridge"), COMPAT(ALTERA_SOCFPGA_LWH2F_BRG, "altr,socfpga-lwhps2fpga-bridge"), COMPAT(ALTERA_SOCFPGA_F2H_BRG, "altr,socfpga-fpga2hps-bridge"), COMPAT(ALTERA_SOCFPGA_F2SDR0, "altr,socfpga-fpga2sdram0-bridge"), COMPAT(ALTERA_SOCFPGA_F2SDR1, "altr,socfpga-fpga2sdram1-bridge"), COMPAT(ALTERA_SOCFPGA_F2SDR2, "altr,socfpga-fpga2sdram2-bridge"), |
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COMPAT(ALTERA_SOCFPGA_FPGA0, "altr,socfpga-a10-fpga-mgr"), COMPAT(ALTERA_SOCFPGA_NOC, "altr,socfpga-a10-noc"), |
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COMPAT(ALTERA_SOCFPGA_CLK_INIT, "altr,socfpga-a10-clk-init") |
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}; |
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const char *fdtdec_get_compatible(enum fdt_compat_id id) { /* We allow reading of the 'unknown' ID for testing purposes */ assert(id >= 0 && id < COMPAT_COUNT); return compat_names[id]; } |
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fdt_addr_t fdtdec_get_addr_size_fixed(const void *blob, int node, |
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const char *prop_name, int index, int na, int ns, fdt_size_t *sizep, bool translate) |
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{ |
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const fdt32_t *prop, *prop_end; const fdt32_t *prop_addr, *prop_size, *prop_after_size; |
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int len; |
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fdt_addr_t addr; |
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|
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debug("%s: %s: ", __func__, prop_name); |
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prop = fdt_getprop(blob, node, prop_name, &len); if (!prop) { debug("(not found) "); return FDT_ADDR_T_NONE; } prop_end = prop + (len / sizeof(*prop)); prop_addr = prop + (index * (na + ns)); prop_size = prop_addr + na; prop_after_size = prop_size + ns; if (prop_after_size > prop_end) { debug("(not enough data: expected >= %d cells, got %d cells) ", (u32)(prop_after_size - prop), ((u32)(prop_end - prop))); return FDT_ADDR_T_NONE; } |
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#if CONFIG_IS_ENABLED(OF_TRANSLATE) |
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if (translate) addr = fdt_translate_address(blob, node, prop_addr); else #endif addr = fdtdec_get_number(prop_addr, na); |
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if (sizep) { *sizep = fdtdec_get_number(prop_size, ns); |
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debug("addr=%08llx, size=%llx ", (unsigned long long)addr, (unsigned long long)*sizep); |
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} else { |
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debug("addr=%08llx ", (unsigned long long)addr); |
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} return addr; } fdt_addr_t fdtdec_get_addr_size_auto_parent(const void *blob, int parent, |
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int node, const char *prop_name, int index, fdt_size_t *sizep, bool translate) |
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{ int na, ns; debug("%s: ", __func__); na = fdt_address_cells(blob, parent); if (na < 1) { debug("(bad #address-cells) "); return FDT_ADDR_T_NONE; } ns = fdt_size_cells(blob, parent); |
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if (ns < 0) { |
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debug("(bad #size-cells) "); return FDT_ADDR_T_NONE; } debug("na=%d, ns=%d, ", na, ns); return fdtdec_get_addr_size_fixed(blob, node, prop_name, index, na, |
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ns, sizep, translate); |
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} fdt_addr_t fdtdec_get_addr_size_auto_noparent(const void *blob, int node, |
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const char *prop_name, int index, fdt_size_t *sizep, bool translate) |
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{ int parent; debug("%s: ", __func__); parent = fdt_parent_offset(blob, node); if (parent < 0) { debug("(no parent found) "); return FDT_ADDR_T_NONE; |
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} |
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return fdtdec_get_addr_size_auto_parent(blob, parent, node, prop_name, |
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index, sizep, translate); |
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} fdt_addr_t fdtdec_get_addr_size(const void *blob, int node, |
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const char *prop_name, fdt_size_t *sizep) |
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{ |
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int ns = sizep ? (sizeof(fdt_size_t) / sizeof(fdt32_t)) : 0; |
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return fdtdec_get_addr_size_fixed(blob, node, prop_name, 0, sizeof(fdt_addr_t) / sizeof(fdt32_t), |
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ns, sizep, false); |
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} |
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fdt_addr_t fdtdec_get_addr(const void *blob, int node, const char *prop_name) |
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{ return fdtdec_get_addr_size(blob, node, prop_name, NULL); } |
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#if CONFIG_IS_ENABLED(PCI) && defined(CONFIG_DM_PCI) |
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int fdtdec_get_pci_addr(const void *blob, int node, enum fdt_pci_space type, |
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const char *prop_name, struct fdt_pci_addr *addr) |
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{ const u32 *cell; int len; int ret = -ENOENT; debug("%s: %s: ", __func__, prop_name); /* * If we follow the pci bus bindings strictly, we should check * the value of the node's parent node's #address-cells and * #size-cells. They need to be 3 and 2 accordingly. However, * for simplicity we skip the check here. */ cell = fdt_getprop(blob, node, prop_name, &len); if (!cell) goto fail; if ((len % FDT_PCI_REG_SIZE) == 0) { int num = len / FDT_PCI_REG_SIZE; int i; for (i = 0; i < num; i++) { debug("pci address #%d: %08lx %08lx %08lx ", i, |
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(ulong)fdt32_to_cpu(cell[0]), (ulong)fdt32_to_cpu(cell[1]), (ulong)fdt32_to_cpu(cell[2])); if ((fdt32_to_cpu(*cell) & type) == type) { addr->phys_hi = fdt32_to_cpu(cell[0]); addr->phys_mid = fdt32_to_cpu(cell[1]); addr->phys_lo = fdt32_to_cpu(cell[1]); |
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break; |
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} |
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cell += (FDT_PCI_ADDR_CELLS + FDT_PCI_SIZE_CELLS); |
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} |
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if (i == num) { ret = -ENXIO; |
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goto fail; |
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} |
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return 0; |
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} |
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ret = -EINVAL; |
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fail: debug("(not found) "); return ret; } int fdtdec_get_pci_vendev(const void *blob, int node, u16 *vendor, u16 *device) { const char *list, *end; int len; list = fdt_getprop(blob, node, "compatible", &len); if (!list) return -ENOENT; end = list + len; while (list < end) { |
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len = strlen(list); if (len >= strlen("pciVVVV,DDDD")) { |
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char *s = strstr(list, "pci"); |
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/* * check if the string is something like pciVVVV,DDDD.RR * or just pciVVVV,DDDD */ if (s && s[7] == ',' && (s[12] == '.' || s[12] == 0)) { s += 3; *vendor = simple_strtol(s, NULL, 16); s += 5; *device = simple_strtol(s, NULL, 16); return 0; } |
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} |
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list += (len + 1); |
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} return -ENOENT; } |
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int fdtdec_get_pci_bar32(struct udevice *dev, struct fdt_pci_addr *addr, u32 *bar) |
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{ |
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int barnum; |
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/* extract the bar number from fdt_pci_addr */ barnum = addr->phys_hi & 0xff; |
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if (barnum < PCI_BASE_ADDRESS_0 || barnum > PCI_CARDBUS_CIS) |
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return -EINVAL; barnum = (barnum - PCI_BASE_ADDRESS_0) / 4; |
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*bar = dm_pci_read_bar32(dev, barnum); |
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return 0; } #endif |
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uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name, |
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uint64_t default_val) |
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{ const uint64_t *cell64; int length; cell64 = fdt_getprop(blob, node, prop_name, &length); if (!cell64 || length < sizeof(*cell64)) return default_val; return fdt64_to_cpu(*cell64); } |
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int fdtdec_get_is_enabled(const void *blob, int node) |
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{ const char *cell; |
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/* * It should say "okay", so only allow that. Some fdts use "ok" but * this is a bug. Please fix your device tree source file. See here * for discussion: * * http://www.mail-archive.com/u-boot@lists.denx.de/msg71598.html */ |
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cell = fdt_getprop(blob, node, "status", NULL); if (cell) |
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return strcmp(cell, "okay") == 0; |
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return 1; |
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} |
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enum fdt_compat_id fdtdec_lookup(const void *blob, int node) |
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{ enum fdt_compat_id id; /* Search our drivers */ for (id = COMPAT_UNKNOWN; id < COMPAT_COUNT; id++) |
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if (fdt_node_check_compatible(blob, node, compat_names[id]) == 0) |
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return id; return COMPAT_UNKNOWN; } |
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int fdtdec_next_compatible(const void *blob, int node, enum fdt_compat_id id) |
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{ return fdt_node_offset_by_compatible(blob, node, compat_names[id]); } |
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int fdtdec_next_compatible_subnode(const void *blob, int node, |
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enum fdt_compat_id id, int *depthp) |
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{ do { node = fdt_next_node(blob, node, depthp); } while (*depthp > 1); /* If this is a direct subnode, and compatible, return it */ if (*depthp == 1 && 0 == fdt_node_check_compatible( blob, node, compat_names[id])) return node; return -FDT_ERR_NOTFOUND; } |
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int fdtdec_next_alias(const void *blob, const char *name, enum fdt_compat_id id, int *upto) |
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{ #define MAX_STR_LEN 20 char str[MAX_STR_LEN + 20]; int node, err; /* snprintf() is not available */ assert(strlen(name) < MAX_STR_LEN); sprintf(str, "%.*s%d", MAX_STR_LEN, name, *upto); |
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node = fdt_path_offset(blob, str); |
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if (node < 0) return node; err = fdt_node_check_compatible(blob, node, compat_names[id]); if (err < 0) return err; |
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if (err) return -FDT_ERR_NOTFOUND; (*upto)++; return node; |
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} |
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int fdtdec_find_aliases_for_id(const void *blob, const char *name, |
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enum fdt_compat_id id, int *node_list, int maxcount) |
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{ |
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memset(node_list, '\0', sizeof(*node_list) * maxcount); return fdtdec_add_aliases_for_id(blob, name, id, node_list, maxcount); } /* TODO: Can we tighten this code up a little? */ int fdtdec_add_aliases_for_id(const void *blob, const char *name, |
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enum fdt_compat_id id, int *node_list, int maxcount) |
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{ |
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int name_len = strlen(name); int nodes[maxcount]; int num_found = 0; int offset, node; int alias_node; int count; int i, j; /* find the alias node if present */ alias_node = fdt_path_offset(blob, "/aliases"); /* * start with nothing, and we can assume that the root node can't * match */ memset(nodes, '\0', sizeof(nodes)); /* First find all the compatible nodes */ for (node = count = 0; node >= 0 && count < maxcount;) { node = fdtdec_next_compatible(blob, node, id); if (node >= 0) nodes[count++] = node; } if (node >= 0) debug("%s: warning: maxcount exceeded with alias '%s' ", |
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__func__, name); |
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/* Now find all the aliases */ |
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for (offset = fdt_first_property_offset(blob, alias_node); offset > 0; offset = fdt_next_property_offset(blob, offset)) { const struct fdt_property *prop; const char *path; int number; int found; node = 0; prop = fdt_get_property_by_offset(blob, offset, NULL); path = fdt_string(blob, fdt32_to_cpu(prop->nameoff)); if (prop->len && 0 == strncmp(path, name, name_len)) node = fdt_path_offset(blob, prop->data); if (node <= 0) continue; /* Get the alias number */ number = simple_strtoul(path + name_len, NULL, 10); if (number < 0 || number >= maxcount) { debug("%s: warning: alias '%s' is out of range ", |
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__func__, path); |
a53f4a29a fdt: Add fdtdec_f... |
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continue; } /* Make sure the node we found is actually in our list! */ found = -1; for (j = 0; j < count; j++) if (nodes[j] == node) { found = j; break; } if (found == -1) { debug("%s: warning: alias '%s' points to a node " "'%s' that is missing or is not compatible " " with '%s' ", __func__, path, fdt_get_name(blob, node, NULL), compat_names[id]); continue; } /* * Add this node to our list in the right place, and mark * it as done. */ if (fdtdec_get_is_enabled(blob, node)) { |
c67822704 fdt: Add function... |
459 460 461 462 463 464 465 466 467 |
if (node_list[number]) { debug("%s: warning: alias '%s' requires that " "a node be placed in the list in a " "position which is already filled by " "node '%s' ", __func__, path, fdt_get_name(blob, node, NULL)); continue; } |
a53f4a29a fdt: Add fdtdec_f... |
468 469 470 471 |
node_list[number] = node; if (number >= num_found) num_found = number + 1; } |
c67822704 fdt: Add function... |
472 |
nodes[found] = 0; |
a53f4a29a fdt: Add fdtdec_f... |
473 474 475 476 477 478 479 |
} /* Add any nodes not mentioned by an alias */ for (i = j = 0; i < maxcount; i++) { if (!node_list[i]) { for (; j < maxcount; j++) if (nodes[j] && |
2e38662dc lib: fdtdec: Fix ... |
480 |
fdtdec_get_is_enabled(blob, nodes[j])) |
a53f4a29a fdt: Add fdtdec_f... |
481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 |
break; /* Have we run out of nodes to add? */ if (j == maxcount) break; assert(!node_list[i]); node_list[i] = nodes[j++]; if (i >= num_found) num_found = i + 1; } } return num_found; } |
5c33c9fdb fdt: Add a functi... |
496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 |
int fdtdec_get_alias_seq(const void *blob, const char *base, int offset, int *seqp) { int base_len = strlen(base); const char *find_name; int find_namelen; int prop_offset; int aliases; find_name = fdt_get_name(blob, offset, &find_namelen); debug("Looking for '%s' at %d, name %s ", base, offset, find_name); aliases = fdt_path_offset(blob, "/aliases"); for (prop_offset = fdt_first_property_offset(blob, aliases); prop_offset > 0; prop_offset = fdt_next_property_offset(blob, prop_offset)) { const char *prop; const char *name; const char *slash; |
c4af6732c lib: Add function... |
516 |
int len, val; |
5c33c9fdb fdt: Add a functi... |
517 518 519 520 521 522 523 524 525 526 527 |
prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len); debug(" - %s, %s ", name, prop); if (len < find_namelen || *prop != '/' || prop[len - 1] || strncmp(name, base, base_len)) continue; slash = strrchr(prop, '/'); if (strcmp(slash + 1, find_name)) continue; |
c4af6732c lib: Add function... |
528 529 530 531 532 533 |
val = trailing_strtol(name); if (val != -1) { *seqp = val; debug("Found seq %d ", *seqp); return 0; |
5c33c9fdb fdt: Add a functi... |
534 535 536 537 538 539 540 |
} } debug("Not found "); return -ENOENT; } |
003c9dc89 fdt: Introduce fd... |
541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 |
int fdtdec_get_alias_highest_id(const void *blob, const char *base) { int base_len = strlen(base); int prop_offset; int aliases; int max = -1; debug("Looking for highest alias id for '%s' ", base); aliases = fdt_path_offset(blob, "/aliases"); for (prop_offset = fdt_first_property_offset(blob, aliases); prop_offset > 0; prop_offset = fdt_next_property_offset(blob, prop_offset)) { const char *prop; const char *name; int len, val; prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len); debug(" - %s, %s ", name, prop); if (*prop != '/' || prop[len - 1] || strncmp(name, base, base_len)) continue; val = trailing_strtol(name); if (val > max) { debug("Found seq %d ", val); max = val; } } return max; } |
3bc37a50e fdt: Add a functi... |
576 |
const char *fdtdec_get_chosen_prop(const void *blob, const char *name) |
aac07d49d dm: fdt: Add a fu... |
577 |
{ |
aac07d49d dm: fdt: Add a fu... |
578 |
int chosen_node; |
aac07d49d dm: fdt: Add a fu... |
579 580 |
if (!blob) |
3bc37a50e fdt: Add a functi... |
581 |
return NULL; |
aac07d49d dm: fdt: Add a fu... |
582 |
chosen_node = fdt_path_offset(blob, "/chosen"); |
3bc37a50e fdt: Add a functi... |
583 584 585 586 587 588 589 590 |
return fdt_getprop(blob, chosen_node, name, NULL); } int fdtdec_get_chosen_node(const void *blob, const char *name) { const char *prop; prop = fdtdec_get_chosen_prop(blob, name); |
aac07d49d dm: fdt: Add a fu... |
591 592 593 594 |
if (!prop) return -FDT_ERR_NOTFOUND; return fdt_path_offset(blob, prop); } |
9a263e55d fdt: Avoid early ... |
595 596 597 598 599 600 601 602 603 604 605 |
int fdtdec_check_fdt(void) { /* * We must have an FDT, but we cannot panic() yet since the console * is not ready. So for now, just assert(). Boards which need an early * FDT (prior to console ready) will need to make their own * arrangements and do their own checks. */ assert(!fdtdec_prepare_fdt()); return 0; } |
b5220bc6e fdt: add decode h... |
606 607 608 609 610 |
/* * This function is a little odd in that it accesses global data. At some * point if the architecture board.c files merge this will make more sense. * Even now, it is common code. */ |
9a263e55d fdt: Avoid early ... |
611 |
int fdtdec_prepare_fdt(void) |
b5220bc6e fdt: add decode h... |
612 |
{ |
c309c2da1 fdt: Skip checkin... |
613 614 |
if (!gd->fdt_blob || ((uintptr_t)gd->fdt_blob & 3) || fdt_check_header(gd->fdt_blob)) { |
66312374d dm: Add a panic_s... |
615 616 617 618 619 620 |
#ifdef CONFIG_SPL_BUILD puts("Missing DTB "); #else puts("No valid device tree binary found - please append one to U-Boot binary, use u-boot-dtb.bin or define CONFIG_OF_EMBED. For sandbox, use -d <file.dtb> "); |
cb5f97f70 fdt: Provide debu... |
621 622 623 624 625 626 627 628 |
# ifdef DEBUG if (gd->fdt_blob) { printf("fdt_blob=%p ", gd->fdt_blob); print_buffer((ulong)gd->fdt_blob, gd->fdt_blob, 4, 32, 0); } # endif |
66312374d dm: Add a panic_s... |
629 |
#endif |
9a263e55d fdt: Avoid early ... |
630 631 |
return -1; } |
b5220bc6e fdt: add decode h... |
632 633 |
return 0; } |
d17da6556 fdt: Add function... |
634 635 636 637 638 |
int fdtdec_lookup_phandle(const void *blob, int node, const char *prop_name) { const u32 *phandle; int lookup; |
1cb2323b8 fdt: Tidy debuggi... |
639 640 |
debug("%s: %s ", __func__, prop_name); |
d17da6556 fdt: Add function... |
641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 |
phandle = fdt_getprop(blob, node, prop_name, NULL); if (!phandle) return -FDT_ERR_NOTFOUND; lookup = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*phandle)); return lookup; } /** * Look up a property in a node and check that it has a minimum length. * * @param blob FDT blob * @param node node to examine * @param prop_name name of property to find * @param min_len minimum property length in bytes * @param err 0 if ok, or -FDT_ERR_NOTFOUND if the property is not found, or -FDT_ERR_BADLAYOUT if not enough data * @return pointer to cell, which is only valid if err == 0 */ static const void *get_prop_check_min_len(const void *blob, int node, |
2e38662dc lib: fdtdec: Fix ... |
661 662 |
const char *prop_name, int min_len, int *err) |
d17da6556 fdt: Add function... |
663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 |
{ const void *cell; int len; debug("%s: %s ", __func__, prop_name); cell = fdt_getprop(blob, node, prop_name, &len); if (!cell) *err = -FDT_ERR_NOTFOUND; else if (len < min_len) *err = -FDT_ERR_BADLAYOUT; else *err = 0; return cell; } int fdtdec_get_int_array(const void *blob, int node, const char *prop_name, |
2e38662dc lib: fdtdec: Fix ... |
680 |
u32 *array, int count) |
d17da6556 fdt: Add function... |
681 682 |
{ const u32 *cell; |
b79221a7d lib: fdtdec: Fix ... |
683 |
int err = 0; |
d17da6556 fdt: Add function... |
684 685 686 687 688 689 |
debug("%s: %s ", __func__, prop_name); cell = get_prop_check_min_len(blob, node, prop_name, sizeof(u32) * count, &err); if (!err) { |
b79221a7d lib: fdtdec: Fix ... |
690 |
int i; |
d17da6556 fdt: Add function... |
691 692 693 694 695 |
for (i = 0; i < count; i++) array[i] = fdt32_to_cpu(cell[i]); } return err; } |
a9f04d49e fdt: Add a functi... |
696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 |
int fdtdec_get_int_array_count(const void *blob, int node, const char *prop_name, u32 *array, int count) { const u32 *cell; int len, elems; int i; debug("%s: %s ", __func__, prop_name); cell = fdt_getprop(blob, node, prop_name, &len); if (!cell) return -FDT_ERR_NOTFOUND; elems = len / sizeof(u32); if (count > elems) count = elems; for (i = 0; i < count; i++) array[i] = fdt32_to_cpu(cell[i]); return count; } |
96875e7d3 fdt: Add function... |
716 717 718 719 720 721 722 723 724 725 |
const u32 *fdtdec_locate_array(const void *blob, int node, const char *prop_name, int count) { const u32 *cell; int err; cell = get_prop_check_min_len(blob, node, prop_name, sizeof(u32) * count, &err); return err ? NULL : cell; } |
d17da6556 fdt: Add function... |
726 727 728 729 730 731 732 733 734 735 |
int fdtdec_get_bool(const void *blob, int node, const char *prop_name) { const s32 *cell; int len; debug("%s: %s ", __func__, prop_name); cell = fdt_getprop(blob, node, prop_name, &len); return cell != NULL; } |
ed3ee5cd0 fdt: Add basic su... |
736 |
|
57068a7ae dm: fdt: Add a fu... |
737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 |
int fdtdec_parse_phandle_with_args(const void *blob, int src_node, const char *list_name, const char *cells_name, int cell_count, int index, struct fdtdec_phandle_args *out_args) { const __be32 *list, *list_end; int rc = 0, size, cur_index = 0; uint32_t count = 0; int node = -1; int phandle; /* Retrieve the phandle list property */ list = fdt_getprop(blob, src_node, list_name, &size); if (!list) return -ENOENT; list_end = list + size / sizeof(*list); /* Loop over the phandles until all the requested entry is found */ while (list < list_end) { rc = -EINVAL; count = 0; /* * If phandle is 0, then it is an empty entry with no * arguments. Skip forward to the next entry. */ phandle = be32_to_cpup(list++); if (phandle) { /* * Find the provider node and parse the #*-cells * property to determine the argument length. * * This is not needed if the cell count is hard-coded * (i.e. cells_name not set, but cell_count is set), * except when we're going to return the found node * below. */ if (cells_name || cur_index == index) { node = fdt_node_offset_by_phandle(blob, phandle); if (!node) { debug("%s: could not find phandle ", fdt_get_name(blob, src_node, NULL)); goto err; } } if (cells_name) { count = fdtdec_get_int(blob, node, cells_name, -1); if (count == -1) { debug("%s: could not get %s for %s ", fdt_get_name(blob, src_node, NULL), cells_name, fdt_get_name(blob, node, NULL)); goto err; } } else { count = cell_count; } /* * Make sure that the arguments actually fit in the * remaining property data length */ if (list + count > list_end) { debug("%s: arguments longer than property ", fdt_get_name(blob, src_node, NULL)); goto err; } } /* * All of the error cases above bail out of the loop, so at * this point, the parsing is successful. If the requested * index matches, then fill the out_args structure and return, * or return -ENOENT for an empty entry. */ rc = -ENOENT; if (cur_index == index) { if (!phandle) goto err; if (out_args) { int i; if (count > MAX_PHANDLE_ARGS) { debug("%s: too many arguments %d ", fdt_get_name(blob, src_node, NULL), count); count = MAX_PHANDLE_ARGS; } out_args->node = node; out_args->args_count = count; for (i = 0; i < count; i++) { out_args->args[i] = be32_to_cpup(list++); } } /* Found it! return success */ return 0; } node = -1; list += count; cur_index++; } /* * Result will be one of: * -ENOENT : index is for empty phandle * -EINVAL : parsing error on data * [1..n] : Number of phandle (count mode; when index = -1) */ rc = index < 0 ? cur_index : -ENOENT; err: return rc; } |
1889a7e27 fdt: introduce fd... |
864 865 866 867 |
int fdtdec_get_child_count(const void *blob, int node) { int subnode; int num = 0; |
df87e6b1b libfdt: Sync fdt_... |
868 |
fdt_for_each_subnode(subnode, blob, node) |
1889a7e27 fdt: introduce fd... |
869 870 871 872 |
num++; return num; } |
bed4d8927 fdt: Add fdtdec f... |
873 |
int fdtdec_get_byte_array(const void *blob, int node, const char *prop_name, |
2e38662dc lib: fdtdec: Fix ... |
874 |
u8 *array, int count) |
bed4d8927 fdt: Add fdtdec f... |
875 876 877 878 879 880 881 882 883 884 885 |
{ const u8 *cell; int err; cell = get_prop_check_min_len(blob, node, prop_name, count, &err); if (!err) memcpy(array, cell, count); return err; } const u8 *fdtdec_locate_byte_array(const void *blob, int node, |
2e38662dc lib: fdtdec: Fix ... |
886 |
const char *prop_name, int count) |
bed4d8927 fdt: Add fdtdec f... |
887 888 889 890 891 892 893 894 895 |
{ const u8 *cell; int err; cell = get_prop_check_min_len(blob, node, prop_name, count, &err); if (err) return NULL; return cell; } |
09258f1e8 fdt: Add function... |
896 |
|
09258f1e8 fdt: Add function... |
897 |
int fdtdec_get_config_int(const void *blob, const char *prop_name, |
2e38662dc lib: fdtdec: Fix ... |
898 |
int default_val) |
09258f1e8 fdt: Add function... |
899 900 901 902 903 904 905 906 907 908 |
{ int config_node; debug("%s: %s ", __func__, prop_name); config_node = fdt_path_offset(blob, "/config"); if (config_node < 0) return default_val; return fdtdec_get_int(blob, config_node, prop_name, default_val); } |
332ab0d54 fdt: Add function... |
909 |
|
79289c0b5 fdt: Add function... |
910 911 912 913 914 915 916 917 918 919 920 921 922 923 |
int fdtdec_get_config_bool(const void *blob, const char *prop_name) { int config_node; const void *prop; debug("%s: %s ", __func__, prop_name); config_node = fdt_path_offset(blob, "/config"); if (config_node < 0) return 0; prop = fdt_get_property(blob, config_node, prop_name, NULL); return prop != NULL; } |
332ab0d54 fdt: Add function... |
924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 |
char *fdtdec_get_config_string(const void *blob, const char *prop_name) { const char *nodep; int nodeoffset; int len; debug("%s: %s ", __func__, prop_name); nodeoffset = fdt_path_offset(blob, "/config"); if (nodeoffset < 0) return NULL; nodep = fdt_getprop(blob, nodeoffset, prop_name, &len); if (!nodep) return NULL; return (char *)nodep; } |
f20c46198 fdt: Add fdtdec_d... |
942 |
|
5f7bfdd63 fdt: Export fdtde... |
943 |
u64 fdtdec_get_number(const fdt32_t *ptr, unsigned int cells) |
56f42242f fdt: Add resource... |
944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 |
{ u64 number = 0; while (cells--) number = (number << 32) | fdt32_to_cpu(*ptr++); return number; } int fdt_get_resource(const void *fdt, int node, const char *property, unsigned int index, struct fdt_resource *res) { const fdt32_t *ptr, *end; int na, ns, len, parent; unsigned int i = 0; parent = fdt_parent_offset(fdt, node); if (parent < 0) return parent; na = fdt_address_cells(fdt, parent); ns = fdt_size_cells(fdt, parent); ptr = fdt_getprop(fdt, node, property, &len); if (!ptr) return len; end = ptr + len / sizeof(*ptr); while (ptr + na + ns <= end) { if (i == index) { |
b79221a7d lib: fdtdec: Fix ... |
975 976 |
res->start = fdtdec_get_number(ptr, na); res->end = res->start; |
56f42242f fdt: Add resource... |
977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 |
res->end += fdtdec_get_number(&ptr[na], ns) - 1; return 0; } ptr += na + ns; i++; } return -FDT_ERR_NOTFOUND; } int fdt_get_named_resource(const void *fdt, int node, const char *property, const char *prop_names, const char *name, struct fdt_resource *res) { int index; |
b02e4044f libfdt: Bring in ... |
993 |
index = fdt_stringlist_search(fdt, node, prop_names, name); |
56f42242f fdt: Add resource... |
994 995 996 997 998 |
if (index < 0) return index; return fdt_get_resource(fdt, node, property, index, res); } |
9f85eee72 fdt: Add a functi... |
999 |
|
12e671142 fdt: Add binding ... |
1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 |
static int decode_timing_property(const void *blob, int node, const char *name, struct timing_entry *result) { int length, ret = 0; const u32 *prop; prop = fdt_getprop(blob, node, name, &length); if (!prop) { debug("%s: could not find property %s ", fdt_get_name(blob, node, NULL), name); return length; } if (length == sizeof(u32)) { result->typ = fdtdec_get_int(blob, node, name, 0); result->min = result->typ; result->max = result->typ; } else { ret = fdtdec_get_int_array(blob, node, name, &result->min, 3); } return ret; } int fdtdec_decode_display_timing(const void *blob, int parent, int index, struct display_timing *dt) { int i, node, timings_node; u32 val = 0; int ret = 0; timings_node = fdt_subnode_offset(blob, parent, "display-timings"); if (timings_node < 0) return timings_node; for (i = 0, node = fdt_first_subnode(blob, timings_node); node > 0 && i != index; node = fdt_next_subnode(blob, node)) i++; if (node < 0) return node; memset(dt, 0, sizeof(*dt)); ret |= decode_timing_property(blob, node, "hback-porch", &dt->hback_porch); ret |= decode_timing_property(blob, node, "hfront-porch", &dt->hfront_porch); ret |= decode_timing_property(blob, node, "hactive", &dt->hactive); ret |= decode_timing_property(blob, node, "hsync-len", &dt->hsync_len); ret |= decode_timing_property(blob, node, "vback-porch", &dt->vback_porch); ret |= decode_timing_property(blob, node, "vfront-porch", &dt->vfront_porch); ret |= decode_timing_property(blob, node, "vactive", &dt->vactive); ret |= decode_timing_property(blob, node, "vsync-len", &dt->vsync_len); ret |= decode_timing_property(blob, node, "clock-frequency", &dt->pixelclock); dt->flags = 0; val = fdtdec_get_int(blob, node, "vsync-active", -1); if (val != -1) { dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH : DISPLAY_FLAGS_VSYNC_LOW; } val = fdtdec_get_int(blob, node, "hsync-active", -1); if (val != -1) { dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH : DISPLAY_FLAGS_HSYNC_LOW; } val = fdtdec_get_int(blob, node, "de-active", -1); if (val != -1) { dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH : DISPLAY_FLAGS_DE_LOW; } val = fdtdec_get_int(blob, node, "pixelclk-active", -1); if (val != -1) { dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE : DISPLAY_FLAGS_PIXDATA_NEGEDGE; } if (fdtdec_get_bool(blob, node, "interlaced")) dt->flags |= DISPLAY_FLAGS_INTERLACED; if (fdtdec_get_bool(blob, node, "doublescan")) dt->flags |= DISPLAY_FLAGS_DOUBLESCAN; if (fdtdec_get_bool(blob, node, "doubleclk")) dt->flags |= DISPLAY_FLAGS_DOUBLECLK; |
04b9dd10c fdt: Correct retu... |
1089 |
return ret; |
12e671142 fdt: Add binding ... |
1090 |
} |
12308b128 lib: fdtdec: Rena... |
1091 |
int fdtdec_setup_mem_size_base(void) |
623f60198 fdt: add memory b... |
1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 |
{ int ret, mem; struct fdt_resource res; mem = fdt_path_offset(gd->fdt_blob, "/memory"); if (mem < 0) { debug("%s: Missing /memory node ", __func__); return -EINVAL; } ret = fdt_get_resource(gd->fdt_blob, mem, "reg", 0, &res); if (ret != 0) { debug("%s: Unable to decode first memory bank ", __func__); return -EINVAL; } gd->ram_size = (phys_size_t)(res.end - res.start + 1); |
1473b12ad lib: fdtdec: Upda... |
1111 |
gd->ram_base = (unsigned long)res.start; |
c69380f85 fdt: Correct cast... |
1112 1113 1114 |
debug("%s: Initial DRAM size %llx ", __func__, (unsigned long long)gd->ram_size); |
623f60198 fdt: add memory b... |
1115 1116 1117 1118 1119 |
return 0; } #if defined(CONFIG_NR_DRAM_BANKS) |
452bc1210 fdt: fix fdtdec_s... |
1120 |
|
658954cb4 Revert "fdt: fdtd... |
1121 |
static int get_next_memory_node(const void *blob, int mem) |
452bc1210 fdt: fix fdtdec_s... |
1122 |
{ |
452bc1210 fdt: fix fdtdec_s... |
1123 |
do { |
658954cb4 Revert "fdt: fdtd... |
1124 1125 1126 |
mem = fdt_node_offset_by_prop_value(gd->fdt_blob, mem, "device_type", "memory", 7); } while (!fdtdec_get_is_enabled(blob, mem)); |
452bc1210 fdt: fix fdtdec_s... |
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return mem; } |
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int fdtdec_setup_memory_banksize(void) { |
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int bank, ret, mem, reg = 0; struct fdt_resource res; |
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|
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mem = get_next_memory_node(gd->fdt_blob, -1); if (mem < 0) { debug("%s: Missing /memory node ", __func__); return -EINVAL; } |
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for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) { |
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ret = fdt_get_resource(gd->fdt_blob, mem, "reg", reg++, &res); if (ret == -FDT_ERR_NOTFOUND) { |
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reg = 0; |
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mem = get_next_memory_node(gd->fdt_blob, mem); if (mem == -FDT_ERR_NOTFOUND) break; ret = fdt_get_resource(gd->fdt_blob, mem, "reg", reg++, &res); if (ret == -FDT_ERR_NOTFOUND) break; } if (ret != 0) { return -EINVAL; |
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} |
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gd->bd->bi_dram[bank].start = (phys_addr_t)res.start; gd->bd->bi_dram[bank].size = (phys_size_t)(res.end - res.start + 1); debug("%s: DRAM Bank #%d: start = 0x%llx, size = 0x%llx ", __func__, bank, (unsigned long long)gd->bd->bi_dram[bank].start, (unsigned long long)gd->bd->bi_dram[bank].size); } return 0; } #endif |
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#if CONFIG_IS_ENABLED(MULTI_DTB_FIT) # if CONFIG_IS_ENABLED(MULTI_DTB_FIT_GZIP) ||\ CONFIG_IS_ENABLED(MULTI_DTB_FIT_LZO) static int uncompress_blob(const void *src, ulong sz_src, void **dstp) { size_t sz_out = CONFIG_SPL_MULTI_DTB_FIT_UNCOMPRESS_SZ; ulong sz_in = sz_src; void *dst; int rc; if (CONFIG_IS_ENABLED(GZIP)) if (gzip_parse_header(src, sz_in) < 0) return -1; if (CONFIG_IS_ENABLED(LZO)) if (!lzop_is_valid_header(src)) return -EBADMSG; if (CONFIG_IS_ENABLED(MULTI_DTB_FIT_DYN_ALLOC)) { dst = malloc(sz_out); if (!dst) { puts("uncompress_blob: Unable to allocate memory "); return -ENOMEM; } } else { # if CONFIG_IS_ENABLED(MULTI_DTB_FIT_USER_DEFINED_AREA) dst = (void *)CONFIG_VAL(MULTI_DTB_FIT_USER_DEF_ADDR); # else return -ENOTSUPP; # endif } if (CONFIG_IS_ENABLED(GZIP)) rc = gunzip(dst, sz_out, (u8 *)src, &sz_in); else if (CONFIG_IS_ENABLED(LZO)) rc = lzop_decompress(src, sz_in, dst, &sz_out); if (rc < 0) { /* not a valid compressed blob */ puts("uncompress_blob: Unable to uncompress "); if (CONFIG_IS_ENABLED(MULTI_DTB_FIT_DYN_ALLOC)) free(dst); return -EBADMSG; } *dstp = dst; return 0; } # else static int uncompress_blob(const void *src, ulong sz_src, void **dstp) { |
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*dstp = (void *)src; return 0; |
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} # endif #endif |
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#if defined(CONFIG_OF_BOARD) || defined(CONFIG_OF_SEPARATE) /* * For CONFIG_OF_SEPARATE, the board may optionally implement this to * provide and/or fixup the fdt. */ __weak void *board_fdt_blob_setup(void) { void *fdt_blob = NULL; #ifdef CONFIG_SPL_BUILD /* FDT is at end of BSS unless it is in a different memory region */ if (IS_ENABLED(CONFIG_SPL_SEPARATE_BSS)) fdt_blob = (ulong *)&_image_binary_end; else fdt_blob = (ulong *)&__bss_end; #else /* FDT is at end of image */ fdt_blob = (ulong *)&_end; #endif return fdt_blob; } #endif |
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int fdtdec_setup(void) |
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{ |
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#if CONFIG_IS_ENABLED(OF_CONTROL) |
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# if CONFIG_IS_ENABLED(MULTI_DTB_FIT) void *fdt_blob; # endif |
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# ifdef CONFIG_OF_EMBED /* Get a pointer to the FDT */ |
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# ifdef CONFIG_SPL_BUILD gd->fdt_blob = __dtb_dt_spl_begin; # else |
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gd->fdt_blob = __dtb_dt_begin; |
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# endif |
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# elif defined(CONFIG_OF_BOARD) || defined(CONFIG_OF_SEPARATE) |
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/* Allow the board to override the fdt address. */ gd->fdt_blob = board_fdt_blob_setup(); |
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# elif defined(CONFIG_OF_HOSTFILE) if (sandbox_read_fdt_from_file()) { puts("Failed to read control FDT "); return -1; } # endif # ifndef CONFIG_SPL_BUILD /* Allow the early environment to override the fdt address */ |
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# if CONFIG_IS_ENABLED(OF_PRIOR_STAGE) gd->fdt_blob = (void *)prior_stage_fdt_address; # else |
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gd->fdt_blob = map_sysmem (env_get_ulong("fdtcontroladdr", 16, (unsigned long)map_to_sysmem(gd->fdt_blob)), 0); |
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# endif |
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# endif |
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# if CONFIG_IS_ENABLED(MULTI_DTB_FIT) /* * Try and uncompress the blob. * Unfortunately there is no way to know how big the input blob really * is. So let us set the maximum input size arbitrarily high. 16MB * ought to be more than enough for packed DTBs. */ if (uncompress_blob(gd->fdt_blob, 0x1000000, &fdt_blob) == 0) gd->fdt_blob = fdt_blob; /* * Check if blob is a FIT images containings DTBs. * If so, pick the most relevant */ fdt_blob = locate_dtb_in_fit(gd->fdt_blob); |
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if (fdt_blob) { gd->multi_dtb_fit = gd->fdt_blob; |
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gd->fdt_blob = fdt_blob; |
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} |
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# endif |
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#endif |
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|
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return fdtdec_prepare_fdt(); |
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} |
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#if CONFIG_IS_ENABLED(MULTI_DTB_FIT) int fdtdec_resetup(int *rescan) { void *fdt_blob; /* * If the current DTB is part of a compressed FIT image, * try to locate the best match from the uncompressed * FIT image stillpresent there. Save the time and space * required to uncompress it again. */ if (gd->multi_dtb_fit) { fdt_blob = locate_dtb_in_fit(gd->multi_dtb_fit); if (fdt_blob == gd->fdt_blob) { /* * The best match did not change. no need to tear down * the DM and rescan the fdt. */ *rescan = 0; return 0; } *rescan = 1; gd->fdt_blob = fdt_blob; return fdtdec_prepare_fdt(); } /* * If multi_dtb_fit is NULL, it means that blob appended to u-boot is * not a FIT image containings DTB, but a single DTB. There is no need * to teard down DM and rescan the DT in this case. */ *rescan = 0; return 0; } #endif |
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#ifdef CONFIG_NR_DRAM_BANKS int fdtdec_decode_ram_size(const void *blob, const char *area, int board_id, phys_addr_t *basep, phys_size_t *sizep, bd_t *bd) { int addr_cells, size_cells; const u32 *cell, *end; u64 total_size, size, addr; int node, child; bool auto_size; int bank; int len; debug("%s: board_id=%d ", __func__, board_id); if (!area) area = "/memory"; node = fdt_path_offset(blob, area); if (node < 0) { debug("No %s node found ", area); return -ENOENT; } cell = fdt_getprop(blob, node, "reg", &len); if (!cell) { debug("No reg property found "); return -ENOENT; } addr_cells = fdt_address_cells(blob, node); size_cells = fdt_size_cells(blob, node); /* Check the board id and mask */ for (child = fdt_first_subnode(blob, node); child >= 0; child = fdt_next_subnode(blob, child)) { int match_mask, match_value; match_mask = fdtdec_get_int(blob, child, "match-mask", -1); match_value = fdtdec_get_int(blob, child, "match-value", -1); if (match_value >= 0 && ((board_id & match_mask) == match_value)) { /* Found matching mask */ debug("Found matching mask %d ", match_mask); node = child; cell = fdt_getprop(blob, node, "reg", &len); if (!cell) { debug("No memory-banks property found "); return -EINVAL; } break; } } /* Note: if no matching subnode was found we use the parent node */ if (bd) { memset(bd->bi_dram, '\0', sizeof(bd->bi_dram[0]) * CONFIG_NR_DRAM_BANKS); } auto_size = fdtdec_get_bool(blob, node, "auto-size"); total_size = 0; end = cell + len / 4 - addr_cells - size_cells; debug("cell at %p, end %p ", cell, end); for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) { if (cell > end) break; addr = 0; if (addr_cells == 2) addr += (u64)fdt32_to_cpu(*cell++) << 32UL; addr += fdt32_to_cpu(*cell++); if (bd) bd->bi_dram[bank].start = addr; if (basep && !bank) *basep = (phys_addr_t)addr; size = 0; if (size_cells == 2) size += (u64)fdt32_to_cpu(*cell++) << 32UL; size += fdt32_to_cpu(*cell++); if (auto_size) { u64 new_size; |
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debug("Auto-sizing %llx, size %llx: ", addr, size); |
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new_size = get_ram_size((long *)(uintptr_t)addr, size); if (new_size == size) { debug("OK "); } else { |
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debug("sized to %llx ", new_size); |
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size = new_size; } } if (bd) bd->bi_dram[bank].size = size; total_size += size; } |
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debug("Memory size %llu ", total_size); |
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if (sizep) *sizep = (phys_size_t)total_size; return 0; } #endif /* CONFIG_NR_DRAM_BANKS */ |
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#endif /* !USE_HOSTCC */ |