mirror of
https://github.com/AsahiLinux/u-boot
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666da85dc9
Add boot command "bootcmd_ram" to support autoboot from RAM.
This feature could be useful at the very initial state of chip design
when there is only a minimal set of peripheral. (e.g. without mmc and mac ..etc)
The kernel image is default to be loaded at 0x2000000 via debug port,
and the following script serves as an example:
spl()
{
cmd="riscv64-linux-gdb -q \
-ex \"target remote $host:$port\" \
-ex \"load\" \
-ex \"thread apply all set \\\$pc=&_start\" \
-ex \"thread apply all set \\\$a0=\\\$mhartid\" \
-ex \"thread apply all set \\\$a1=<dtb address>\" \
-ex \"restore u-boot.itb binary 0x200000\" \
-ex \"restore Image binary 0x2000000\" \
-ex \"c\" \
spl/u-boot-spl
"
echo $cmd
eval $cmd
}
The address where the kernel is loaded can be altered by
changing the value of KERNEL_IMAGE_ADDR.
Signed-off-by: Leo Yu-Chi Liang <ycliang@andestech.com>
Reviewed-by: Rick Chen <rick@andestech.com>
149 lines
3.7 KiB
C
149 lines
3.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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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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#ifndef __CONFIG_H
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#define __CONFIG_H
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#ifdef CONFIG_SPL
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#define CONFIG_SPL_MAX_SIZE 0x00100000
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#define CONFIG_SPL_BSS_START_ADDR 0x04000000
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#define CONFIG_SPL_BSS_MAX_SIZE 0x00100000
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#ifdef CONFIG_SPL_MMC
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#define CONFIG_SPL_FS_LOAD_PAYLOAD_NAME "u-boot.itb"
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#endif
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#endif
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#define RISCV_MMODE_TIMERBASE 0xe6000000
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#define RISCV_MMODE_TIMER_FREQ 60000000
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#define RISCV_SMODE_TIMER_FREQ 60000000
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/*
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* CPU and Board Configuration Options
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*/
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/*
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* Miscellaneous configurable options
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*/
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#define CONFIG_SYS_CBSIZE 1024 /* Console I/O Buffer Size */
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/*
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* Print Buffer Size
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*/
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#define CONFIG_SYS_PBSIZE \
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(CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT) + 16)
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/*
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* max number of command args
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*/
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#define CONFIG_SYS_MAXARGS 16
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/*
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* Boot Argument Buffer Size
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*/
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#define CONFIG_SYS_BARGSIZE CONFIG_SYS_CBSIZE
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/* DT blob (fdt) address */
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#define CONFIG_SYS_FDT_BASE 0x800f0000
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/*
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* Physical Memory Map
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*/
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#define PHYS_SDRAM_0 0x00000000 /* SDRAM Bank #1 */
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#define PHYS_SDRAM_1 \
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(PHYS_SDRAM_0 + PHYS_SDRAM_0_SIZE) /* SDRAM Bank #2 */
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#define PHYS_SDRAM_0_SIZE 0x20000000 /* 512 MB */
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#define PHYS_SDRAM_1_SIZE 0x20000000 /* 512 MB */
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#define CONFIG_SYS_SDRAM_BASE PHYS_SDRAM_0
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/*
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* Serial console configuration
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*/
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#define CONFIG_SYS_NS16550_SERIAL
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#ifndef CONFIG_DM_SERIAL
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#define CONFIG_SYS_NS16550_REG_SIZE -4
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#endif
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#define CONFIG_SYS_NS16550_CLK 19660800
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/* Init Stack Pointer */
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#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + 0x1000000 - \
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GENERATED_GBL_DATA_SIZE)
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/* use CFI framework */
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#define CONFIG_SYS_FLASH_CFI_WIDTH FLASH_CFI_16BIT
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#define CONFIG_SYS_CFI_FLASH_STATUS_POLL
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/* support JEDEC */
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#ifdef CONFIG_CFI_FLASH
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#define CONFIG_SYS_MAX_FLASH_BANKS_DETECT 1
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#endif/* Do not use CONFIG_FLASH_CFI_LEGACY to detect on board flash */
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#define PHYS_FLASH_1 0x88000000 /* BANK 0 */
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#define CONFIG_SYS_FLASH_BASE PHYS_FLASH_1
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#define CONFIG_SYS_FLASH_BANKS_LIST { PHYS_FLASH_1, }
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#define CONFIG_SYS_MONITOR_BASE PHYS_FLASH_1
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#define CONFIG_SYS_FLASH_ERASE_TOUT 120000 /* TO for Flash Erase (ms) */
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#define CONFIG_SYS_FLASH_WRITE_TOUT 500 /* TO for Flash Write (ms) */
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/* max number of memory banks */
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/*
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* There are 4 banks supported for this Controller,
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* but we have only 1 bank connected to flash on board
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*/
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#ifndef CONFIG_SYS_MAX_FLASH_BANKS_DETECT
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#define CONFIG_SYS_MAX_FLASH_BANKS 1
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#endif
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#define CONFIG_SYS_FLASH_BANKS_SIZES {0x4000000}
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/* max number of sectors on one chip */
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#define CONFIG_FLASH_SECTOR_SIZE (0x10000*2)
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#define CONFIG_SYS_MAX_FLASH_SECT 512
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/* environments */
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/* SPI FLASH */
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/*
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* For booting Linux, the board info and command line data
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* have to be in the first 16 MB of memory, since this is
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* the maximum mapped by the Linux kernel during initialization.
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*/
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/* Initial Memory map for Linux*/
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#define CONFIG_SYS_BOOTMAPSZ (64 << 20)
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/* Increase max gunzip size */
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#define CONFIG_SYS_BOOTM_LEN (64 << 20)
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/* Support autoboot from RAM (kernel image is loaded via debug port) */
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#define KERNEL_IMAGE_ADDR "0x2000000 "
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#define BOOTENV_DEV_NAME_RAM(devtypeu, devtypel, instance) \
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"ram "
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#define BOOTENV_DEV_RAM(devtypeu, devtypel, instance) \
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"bootcmd_ram=" \
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"booti " \
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KERNEL_IMAGE_ADDR \
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"- $fdtcontroladdr\0"
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/* When we use RAM as ENV */
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/* Enable distro boot */
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#define BOOT_TARGET_DEVICES(func) \
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func(MMC, mmc, 0) \
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func(DHCP, dhcp, na) \
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func(RAM, ram, na)
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#include <config_distro_bootcmd.h>
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#define CONFIG_EXTRA_ENV_SETTINGS \
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"kernel_addr_r=0x00080000\0" \
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"pxefile_addr_r=0x01f00000\0" \
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"scriptaddr=0x01f00000\0" \
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"fdt_addr_r=0x02000000\0" \
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"ramdisk_addr_r=0x02800000\0" \
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BOOTENV
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#endif /* __CONFIG_H */
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