mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-10 13:16:16 +09:00
2cf2b51394
Update the memory layout to be aligned with other platform and avoid
overlap with 32MB Linux kernel (multiv7 image).
+ Kernel => 32MiB offset = 0xC2000000
and increase the bootm size to 32MiB
+ FDT => 64MiB offset = 0xc4000000
+ SCRIPT => 65Mib offset = 0xc4100000
+ PXESCRIPT => 66Mib offset = 0xc4200000
+ SPLASHIMAGE => 67Mib offset = 0xc4300000
+ RAMDISK => 68Mib offset = 0xc4400000
(not limited size)
In sources/boot/u-boot/doc/README.distro
+ kernel_addr_r: A size of 16MB for the kernel is likely adequate.
+ pxefile_addr_r: A size of 1MB for extlinux.conf is more than adequate.
+ fdt_addr_r: A size of 1MB for the FDT/DTB seems reasonable.
+ ramdisk_addr_r: It is recommended that this location be highest in RAM
out of fdt_addr_, kernel_addr_r, and ramdisk_addr_r,
so that the RAM disk can vary in size and use any
available RAM.
+ pxefile_addr_r: A size of 1MB for extlinux.conf is more than adequate.
+ scriptaddr: A size of 1MB for extlinux.conf is more than adequate.
For suggestions on memory locations for ARM systems, you must follow
the guidelines specified in Documentation/arm/Booting
in the Linux kernel tree.
And in sources/linux-stm32mp/Documentation/arm/Booting
The zImage may also be placed in system RAM and called there. The
kernel should be placed in the first 128MiB of RAM. It is recommended
that it is loaded above 32MiB in order to avoid the need to relocate
prior to decompression, which will make the boot process slightly
faster.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
133 lines
3.3 KiB
C
133 lines
3.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause */
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/*
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* Copyright (C) 2018, STMicroelectronics - All Rights Reserved
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*
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* Configuration settings for the STM32MP15x CPU
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*/
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#ifndef __CONFIG_H
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#define __CONFIG_H
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#include <linux/sizes.h>
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#include <asm/arch/stm32.h>
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/*
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* Number of clock ticks in 1 sec
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*/
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#define CONFIG_SYS_HZ 1000
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#ifndef CONFIG_STM32MP1_TRUSTED
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/* PSCI support */
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#define CONFIG_ARMV7_PSCI_1_0
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#define CONFIG_ARMV7_SECURE_BASE STM32_SYSRAM_BASE
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#define CONFIG_ARMV7_SECURE_MAX_SIZE STM32_SYSRAM_SIZE
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#endif
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/*
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* malloc() pool size
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*/
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#define CONFIG_SYS_MALLOC_LEN SZ_32M
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/*
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* Configuration of the external SRAM memory used by U-Boot
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*/
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#define CONFIG_SYS_SDRAM_BASE STM32_DDR_BASE
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#define CONFIG_SYS_INIT_SP_ADDR CONFIG_SYS_TEXT_BASE
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/*
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* Console I/O buffer size
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*/
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#define CONFIG_SYS_CBSIZE SZ_1K
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/*
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* Needed by "loadb"
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*/
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#define CONFIG_SYS_LOAD_ADDR STM32_DDR_BASE
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/*
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* Env parameters
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*/
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#define CONFIG_ENV_SIZE SZ_4K
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/* ATAGs */
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#define CONFIG_CMDLINE_TAG
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#define CONFIG_SETUP_MEMORY_TAGS
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#define CONFIG_INITRD_TAG
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/* Extend size of kernel image for uncompression */
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#define CONFIG_SYS_BOOTM_LEN SZ_32M
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/* SPL support */
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#ifdef CONFIG_SPL
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/* BOOTROM load address */
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#define CONFIG_SPL_TEXT_BASE 0x2FFC2500
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/* SPL use DDR */
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#define CONFIG_SPL_BSS_START_ADDR 0xC0200000
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#define CONFIG_SPL_BSS_MAX_SIZE 0x00100000
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#define CONFIG_SYS_SPL_MALLOC_START 0xC0300000
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#define CONFIG_SYS_SPL_MALLOC_SIZE 0x00100000
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/* limit SYSRAM usage to first 128 KB */
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#define CONFIG_SPL_MAX_SIZE 0x00020000
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#define CONFIG_SPL_STACK (STM32_SYSRAM_BASE + \
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STM32_SYSRAM_SIZE)
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#endif /* #ifdef CONFIG_SPL */
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/*MMC SD*/
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#define CONFIG_SYS_MMC_MAX_DEVICE 3
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#define CONFIG_SUPPORT_EMMC_BOOT
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/*****************************************************************************/
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#ifdef CONFIG_DISTRO_DEFAULTS
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/*****************************************************************************/
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#if !defined(CONFIG_SPL_BUILD)
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#define BOOT_TARGET_DEVICES(func) \
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func(MMC, mmc, 1) \
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func(MMC, mmc, 0) \
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func(MMC, mmc, 2)
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/*
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* bootcmd for stm32mp1:
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* for serial/usb: execute the stm32prog command
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* for mmc boot (eMMC, SD card), boot only on the same device
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* for nand boot, boot with on ubifs partition on nand
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* for nor boot, use the default order
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*/
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#define CONFIG_PREBOOT
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#define STM32MP_BOOTCMD "bootcmd_stm32mp=" \
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"echo \"Boot over ${boot_device}${boot_instance}!\";" \
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"if test ${boot_device} = serial || test ${boot_device} = usb;" \
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"then stm32prog ${boot_device} ${boot_instance}; " \
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"else " \
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"if test ${boot_device} = mmc;" \
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"then env set boot_targets \"mmc${boot_instance}\"; fi;" \
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"if test ${boot_device} = nand;" \
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"then env set boot_targets ubifs0; fi;" \
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"run distro_bootcmd;" \
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"fi;\0"
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#include <config_distro_bootcmd.h>
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/*
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* memory layout for 32M uncompressed/compressed kernel,
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* 1M fdt, 1M script, 1M pxe and 1M for splashimage
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* and the ramdisk at the end.
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*/
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#define CONFIG_EXTRA_ENV_SETTINGS \
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"kernel_addr_r=0xc2000000\0" \
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"fdt_addr_r=0xc4000000\0" \
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"scriptaddr=0xc4100000\0" \
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"pxefile_addr_r=0xc4200000\0" \
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"splashimage=0xc4300000\0" \
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"ramdisk_addr_r=0xc4400000\0" \
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"fdt_high=0xffffffff\0" \
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"initrd_high=0xffffffff\0" \
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STM32MP_BOOTCMD \
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BOOTENV
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#endif /* ifndef CONFIG_SPL_BUILD */
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#endif /* ifdef CONFIG_DISTRO_DEFAULTS*/
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#endif /* __CONFIG_H */
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