mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-09-07 21:33:24 +09:00
![Rick Chen](/assets/img/avatar_default.png)
Enable CONFIG_OF_BOAD to support delivery dtb to u-boot at run time instead of embedded. There are two methods to delivery dtb. 1 Pass from loader: When u-boot boot from RAM, gdb or loader can pass dtb via a2 to u-boot dynamically. Of course gdb or loader shall be in charge of dtb delivery. 2 Configure CONFIG_SYS_FDT_BASE: It can be configured as RAM or ROM base statically, no mater u-boot boot from RAM or ROM. If it was configured as ROM base, dtb can be burned into ROM(spi flash) by spi driver. Meanwhile remove CONFIG_SKIP_LOWLEVEL_INIT which is useless in nx25-ae250 configuration. Signed-off-by: Rick Chen <rick@andestech.com> Signed-off-by: Rick Chen <rickchen36@gmail.com> Cc: Greentime Hu <green.hu@gmail.com>
76 lines
1.5 KiB
C
76 lines
1.5 KiB
C
/*
|
|
* Copyright (C) 2017 Andes Technology Corporation
|
|
* Rick Chen, Andes Technology Corporation <rick@andestech.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <asm/mach-types.h>
|
|
#include <common.h>
|
|
#if defined(CONFIG_FTMAC100) && !defined(CONFIG_DM_ETH)
|
|
#include <netdev.h>
|
|
#endif
|
|
#include <linux/io.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
/*
|
|
* Miscellaneous platform dependent initializations
|
|
*/
|
|
|
|
int board_init(void)
|
|
{
|
|
gd->bd->bi_arch_number = MACH_TYPE_AE250;
|
|
gd->bd->bi_boot_params = PHYS_SDRAM_0 + 0x400;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int dram_init(void)
|
|
{
|
|
unsigned long sdram_base = PHYS_SDRAM_0;
|
|
unsigned long expected_size = PHYS_SDRAM_0_SIZE + PHYS_SDRAM_1_SIZE;
|
|
unsigned long actual_size;
|
|
|
|
actual_size = get_ram_size((void *)sdram_base, expected_size);
|
|
gd->ram_size = actual_size;
|
|
|
|
if (expected_size != actual_size) {
|
|
printf("Warning: Only %lu of %lu MiB SDRAM is working\n",
|
|
actual_size >> 20, expected_size >> 20);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int dram_init_banksize(void)
|
|
{
|
|
gd->bd->bi_dram[0].start = PHYS_SDRAM_0;
|
|
gd->bd->bi_dram[0].size = PHYS_SDRAM_0_SIZE;
|
|
gd->bd->bi_dram[1].start = PHYS_SDRAM_1;
|
|
gd->bd->bi_dram[1].size = PHYS_SDRAM_1_SIZE;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#if defined(CONFIG_FTMAC100) && !defined(CONFIG_DM_ETH)
|
|
int board_eth_init(bd_t *bd)
|
|
{
|
|
return ftmac100_initialize(bd);
|
|
}
|
|
#endif
|
|
|
|
ulong board_flash_get_legacy(ulong base, int banknum, flash_info_t *info)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void *board_fdt_blob_setup(void)
|
|
{
|
|
void **ptr = (void *)CONFIG_SYS_SDRAM_BASE;
|
|
if (fdt_magic(*ptr) == FDT_MAGIC)
|
|
return (void *)*ptr;
|
|
|
|
return (void *)CONFIG_SYS_FDT_BASE;
|
|
}
|