mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-11 22:03:15 +00:00
d58717e425
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>
75 lines
1.5 KiB
C
75 lines
1.5 KiB
C
/*
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* Copyright (C) 2017 Andes Technology Corporation
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* Rick Chen, Andes Technology Corporation <rick@andestech.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <asm/mach-types.h>
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#include <common.h>
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#if defined(CONFIG_FTMAC100) && !defined(CONFIG_DM_ETH)
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#include <netdev.h>
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#endif
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#include <linux/io.h>
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DECLARE_GLOBAL_DATA_PTR;
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/*
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* Miscellaneous platform dependent initializations
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*/
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int board_init(void)
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{
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gd->bd->bi_arch_number = MACH_TYPE_AE250;
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gd->bd->bi_boot_params = PHYS_SDRAM_0 + 0x400;
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return 0;
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}
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int dram_init(void)
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{
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unsigned long sdram_base = PHYS_SDRAM_0;
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unsigned long expected_size = PHYS_SDRAM_0_SIZE + PHYS_SDRAM_1_SIZE;
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unsigned long actual_size;
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actual_size = get_ram_size((void *)sdram_base, expected_size);
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gd->ram_size = actual_size;
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if (expected_size != actual_size) {
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printf("Warning: Only %lu of %lu MiB SDRAM is working\n",
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actual_size >> 20, expected_size >> 20);
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}
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return 0;
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}
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int dram_init_banksize(void)
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{
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gd->bd->bi_dram[0].start = PHYS_SDRAM_0;
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gd->bd->bi_dram[0].size = PHYS_SDRAM_0_SIZE;
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gd->bd->bi_dram[1].start = PHYS_SDRAM_1;
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gd->bd->bi_dram[1].size = PHYS_SDRAM_1_SIZE;
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return 0;
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}
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#if defined(CONFIG_FTMAC100) && !defined(CONFIG_DM_ETH)
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int board_eth_init(bd_t *bd)
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{
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return ftmac100_initialize(bd);
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}
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#endif
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ulong board_flash_get_legacy(ulong base, int banknum, flash_info_t *info)
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{
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return 0;
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}
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void *board_fdt_blob_setup(void)
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{
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void **ptr = (void *)CONFIG_SYS_SDRAM_BASE;
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if (fdt_magic(*ptr) == FDT_MAGIC)
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return (void *)*ptr;
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return (void *)CONFIG_SYS_FDT_BASE;
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}
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