ve8313.c
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/*
* Copyright (C) Freescale Semiconductor, Inc. 2006-2007
*
* Author: Scott Wood <scottwood@freescale.com>
*
* (C) Copyright 2010
* Heiko Schocher, DENX Software Engineering, hs@denx.de.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <linux/libfdt.h>
#include <pci.h>
#include <mpc83xx.h>
#include <ns16550.h>
#include <nand.h>
#include <asm/bitops.h>
#include <asm/io.h>
DECLARE_GLOBAL_DATA_PTR;
extern void disable_addr_trans (void);
extern void enable_addr_trans (void);
int checkboard(void)
{
puts("Board: ve8313\n");
return 0;
}
static long fixed_sdram(void)
{
u32 msize = CONFIG_SYS_DDR_SIZE * 1024 * 1024;
#ifndef CONFIG_SYS_RAMBOOT
volatile immap_t *im = (volatile immap_t *)CONFIG_SYS_IMMR;
u32 msize_log2 = __ilog2(msize);
out_be32(&im->sysconf.ddrlaw[0].bar,
(CONFIG_SYS_DDR_SDRAM_BASE & 0xfffff000));
out_be32(&im->sysconf.ddrlaw[0].ar, (LBLAWAR_EN | (msize_log2 - 1)));
out_be32(&im->sysconf.ddrcdr, CONFIG_SYS_DDRCDR_VALUE);
/*
* Erratum DDR3 requires a 50ms delay after clearing DDRCDR[DDR_cfg],
* or the DDR2 controller may fail to initialize correctly.
*/
__udelay(50000);
#if ((CONFIG_SYS_DDR_SDRAM_BASE & 0x00FFFFFF) != 0)
#warning Chip select bounds is only configurable in 16MB increments
#endif
out_be32(&im->ddr.csbnds[0].csbnds,
((CONFIG_SYS_DDR_SDRAM_BASE >> CSBNDS_SA_SHIFT) & CSBNDS_SA) |
(((CONFIG_SYS_DDR_SDRAM_BASE + msize - 1) >> CSBNDS_EA_SHIFT) &
CSBNDS_EA));
out_be32(&im->ddr.cs_config[0], CONFIG_SYS_DDR_CS0_CONFIG);
/* Currently we use only one CS, so disable the other bank. */
out_be32(&im->ddr.cs_config[1], 0);
out_be32(&im->ddr.sdram_clk_cntl, CONFIG_SYS_DDR_CLK_CNTL);
out_be32(&im->ddr.timing_cfg_3, CONFIG_SYS_DDR_TIMING_3);
out_be32(&im->ddr.timing_cfg_1, CONFIG_SYS_DDR_TIMING_1);
out_be32(&im->ddr.timing_cfg_2, CONFIG_SYS_DDR_TIMING_2);
out_be32(&im->ddr.timing_cfg_0, CONFIG_SYS_DDR_TIMING_0);
out_be32(&im->ddr.sdram_cfg, CONFIG_SYS_SDRAM_CFG);
out_be32(&im->ddr.sdram_cfg2, CONFIG_SYS_SDRAM_CFG2);
out_be32(&im->ddr.sdram_mode, CONFIG_SYS_DDR_MODE);
out_be32(&im->ddr.sdram_mode2, CONFIG_SYS_DDR_MODE_2);
out_be32(&im->ddr.sdram_interval, CONFIG_SYS_DDR_INTERVAL);
sync();
/* enable DDR controller */
setbits_be32(&im->ddr.sdram_cfg, SDRAM_CFG_MEM_EN);
/* now check the real size */
disable_addr_trans ();
msize = get_ram_size (CONFIG_SYS_DDR_BASE, msize);
enable_addr_trans ();
#endif
return msize;
}
int dram_init(void)
{
volatile immap_t *im = (volatile immap_t *)CONFIG_SYS_IMMR;
volatile fsl_lbc_t *lbc = &im->im_lbc;
u32 msize;
if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32)im)
return -1;
/* DDR SDRAM - Main SODIMM */
msize = fixed_sdram();
/* Local Bus setup lbcr and mrtpr */
out_be32(&lbc->lbcr, CONFIG_SYS_LBC_LBCR);
out_be32(&lbc->mrtpr, CONFIG_SYS_LBC_MRTPR);
sync();
/* return total bus SDRAM size(bytes) -- DDR */
gd->ram_size = msize;
return 0;
}
#define VE8313_WDT_EN 0x00020000
#define VE8313_WDT_TRIG 0x00040000
int board_early_init_f (void)
{
volatile immap_t *im = (volatile immap_t *)CONFIG_SYS_IMMR;
volatile gpio83xx_t *gpio = (volatile gpio83xx_t *)im->gpio;
#if defined(CONFIG_HW_WATCHDOG)
/* enable WDT */
clrbits_be32(&gpio->dat, VE8313_WDT_EN | VE8313_WDT_TRIG);
#else
/* disable WDT */
setbits_be32(&gpio->dat, VE8313_WDT_EN | VE8313_WDT_TRIG);
#endif
/* set WDT pins as output */
setbits_be32(&gpio->dir, VE8313_WDT_EN | VE8313_WDT_TRIG);
return 0;
}
#if defined(CONFIG_HW_WATCHDOG)
void hw_watchdog_reset(void)
{
volatile immap_t *im = (volatile immap_t *)CONFIG_SYS_IMMR;
volatile gpio83xx_t *gpio = (volatile gpio83xx_t *)im->gpio;
unsigned long reg;
reg = in_be32(&gpio->dat);
if (reg & VE8313_WDT_TRIG)
clrbits_be32(&gpio->dat, VE8313_WDT_TRIG);
else
setbits_be32(&gpio->dat, VE8313_WDT_TRIG);
}
#endif
#if defined(CONFIG_PCI)
static struct pci_region pci_regions[] = {
{
bus_start: CONFIG_SYS_PCI1_MEM_BASE,
phys_start: CONFIG_SYS_PCI1_MEM_PHYS,
size: CONFIG_SYS_PCI1_MEM_SIZE,
flags: PCI_REGION_MEM | PCI_REGION_PREFETCH
},
{
bus_start: CONFIG_SYS_PCI1_MMIO_BASE,
phys_start: CONFIG_SYS_PCI1_MMIO_PHYS,
size: CONFIG_SYS_PCI1_MMIO_SIZE,
flags: PCI_REGION_MEM
},
{
bus_start: CONFIG_SYS_PCI1_IO_BASE,
phys_start: CONFIG_SYS_PCI1_IO_PHYS,
size: CONFIG_SYS_PCI1_IO_SIZE,
flags: PCI_REGION_IO
}
};
void pci_init_board(void)
{
volatile immap_t *immr = (volatile immap_t *)CONFIG_SYS_IMMR;
volatile clk83xx_t *clk = (volatile clk83xx_t *)&immr->clk;
volatile law83xx_t *pci_law = immr->sysconf.pcilaw;
struct pci_region *reg[] = { pci_regions };
/* Enable all 3 PCI_CLK_OUTPUTs. */
setbits_be32(&clk->occr, 0xe0000000);
/*
* Configure PCI Local Access Windows
*/
out_be32(&pci_law[0].bar, CONFIG_SYS_PCI1_MEM_PHYS & LAWBAR_BAR);
out_be32(&pci_law[0].ar, LBLAWAR_EN | LBLAWAR_512MB);
out_be32(&pci_law[1].bar, CONFIG_SYS_PCI1_IO_PHYS & LAWBAR_BAR);
out_be32(&pci_law[1].ar, LBLAWAR_EN | LBLAWAR_1MB);
mpc83xx_pci_init(1, reg);
}
#endif
#if defined(CONFIG_OF_BOARD_SETUP)
int ft_board_setup(void *blob, bd_t *bd)
{
ft_cpu_setup(blob, bd);
#ifdef CONFIG_PCI
ft_pci_setup(blob, bd);
#endif
return 0;
}
#endif