rk3399-board-spl.c
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/*
* (C) Copyright 2016 Rockchip Electronics Co., Ltd
* (C) Copyright 2017 Theobroma Systems Design und Consulting GmbH
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/arch/bootrom.h>
#include <asm/arch/clock.h>
#include <asm/arch/grf_rk3399.h>
#include <asm/arch/hardware.h>
#include <asm/arch/periph.h>
#include <asm/io.h>
#include <debug_uart.h>
#include <dm.h>
#include <dm/pinctrl.h>
#include <ram.h>
#include <spl.h>
#include <syscon.h>
DECLARE_GLOBAL_DATA_PTR;
void board_return_to_bootrom(void)
{
back_to_bootrom(BROM_BOOT_NEXTSTAGE);
}
static const char * const boot_devices[BROM_LAST_BOOTSOURCE + 1] = {
[BROM_BOOTSOURCE_EMMC] = "/sdhci@fe330000",
[BROM_BOOTSOURCE_SPINOR] = "/spi@ff1d0000",
[BROM_BOOTSOURCE_SD] = "/dwmmc@fe320000",
};
const char *board_spl_was_booted_from(void)
{
u32 bootdevice_brom_id = readl(RK3399_BROM_BOOTSOURCE_ID_ADDR);
const char *bootdevice_ofpath = NULL;
if (bootdevice_brom_id < ARRAY_SIZE(boot_devices))
bootdevice_ofpath = boot_devices[bootdevice_brom_id];
if (bootdevice_ofpath)
debug("%s: brom_bootdevice_id %x maps to '%s'\n",
__func__, bootdevice_brom_id, bootdevice_ofpath);
else
debug("%s: failed to resolve brom_bootdevice_id %x\n",
__func__, bootdevice_brom_id);
return bootdevice_ofpath;
}
u32 spl_boot_device(void)
{
u32 boot_device = BOOT_DEVICE_MMC1;
if (CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM))
return BOOT_DEVICE_BOOTROM;
return boot_device;
}
#define TIMER_CHN10_BASE 0xff8680a0
#define TIMER_END_COUNT_L 0x00
#define TIMER_END_COUNT_H 0x04
#define TIMER_INIT_COUNT_L 0x10
#define TIMER_INIT_COUNT_H 0x14
#define TIMER_CONTROL_REG 0x1c
#define TIMER_EN 0x1
#define TIMER_FMODE (0 << 1)
#define TIMER_RMODE (1 << 1)
void secure_timer_init(void)
{
writel(0xffffffff, TIMER_CHN10_BASE + TIMER_END_COUNT_L);
writel(0xffffffff, TIMER_CHN10_BASE + TIMER_END_COUNT_H);
writel(0, TIMER_CHN10_BASE + TIMER_INIT_COUNT_L);
writel(0, TIMER_CHN10_BASE + TIMER_INIT_COUNT_H);
writel(TIMER_EN | TIMER_FMODE, TIMER_CHN10_BASE + TIMER_CONTROL_REG);
}
void board_debug_uart_init(void)
{
#define GRF_BASE 0xff770000
struct rk3399_grf_regs * const grf = (void *)GRF_BASE;
#if defined(CONFIG_DEBUG_UART_BASE) && (CONFIG_DEBUG_UART_BASE == 0xff180000)
/* Enable early UART0 on the RK3399 */
rk_clrsetreg(&grf->gpio2c_iomux,
GRF_GPIO2C0_SEL_MASK,
GRF_UART0BT_SIN << GRF_GPIO2C0_SEL_SHIFT);
rk_clrsetreg(&grf->gpio2c_iomux,
GRF_GPIO2C1_SEL_MASK,
GRF_UART0BT_SOUT << GRF_GPIO2C1_SEL_SHIFT);
#else
/* Enable early UART2 channel C on the RK3399 */
rk_clrsetreg(&grf->gpio4c_iomux,
GRF_GPIO4C3_SEL_MASK,
GRF_UART2DGBC_SIN << GRF_GPIO4C3_SEL_SHIFT);
rk_clrsetreg(&grf->gpio4c_iomux,
GRF_GPIO4C4_SEL_MASK,
GRF_UART2DBGC_SOUT << GRF_GPIO4C4_SEL_SHIFT);
/* Set channel C as UART2 input */
rk_clrsetreg(&grf->soc_con7,
GRF_UART_DBG_SEL_MASK,
GRF_UART_DBG_SEL_C << GRF_UART_DBG_SEL_SHIFT);
#endif
}
void board_init_f(ulong dummy)
{
struct udevice *pinctrl;
struct udevice *dev;
struct rk3399_pmusgrf_regs *sgrf;
struct rk3399_grf_regs *grf;
int ret;
#define EARLY_UART
#ifdef EARLY_UART
/*
* Debug UART can be used from here if required:
*
* debug_uart_init();
* printch('a');
* printhex8(0x1234);
* printascii("string");
*/
debug_uart_init();
printascii("U-Boot SPL board init");
#endif
ret = spl_early_init();
if (ret) {
debug("spl_early_init() failed: %d\n", ret);
hang();
}
/*
* Disable DDR and SRAM security regions.
*
* As we are entered from the BootROM, the region from
* 0x0 through 0xfffff (i.e. the first MB of memory) will
* be protected. This will cause issues with the DW_MMC
* driver, which tries to DMA from/to the stack (likely)
* located in this range.
*/
sgrf = syscon_get_first_range(ROCKCHIP_SYSCON_PMUSGRF);
rk_clrsetreg(&sgrf->ddr_rgn_con[16], 0x1ff, 0);
rk_clrreg(&sgrf->slv_secure_con4, 0x2000);
/* eMMC clock generator: disable the clock multipilier */
grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
rk_clrreg(&grf->emmccore_con[11], 0x0ff);
secure_timer_init();
ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
if (ret) {
debug("Pinctrl init failed: %d\n", ret);
return;
}
ret = uclass_get_device(UCLASS_RAM, 0, &dev);
if (ret) {
debug("DRAM init failed: %d\n", ret);
return;
}
}
#ifdef CONFIG_SPL_LOAD_FIT
int board_fit_config_name_match(const char *name)
{
/* Just empty function now - can't decide what to choose */
debug("%s: %s\n", __func__, name);
return 0;
}
#endif