mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
a08d1a916b
A now removed comment promises to "limit SYSRAM usage to first 128 KB". This would imply that only SYSRAM from 0x2ffc0000 - 0x2ffe0000 would be used. This is not what happens at all. First, SPL_MAX_SIZE is referenced from SPL_TEXT_BASE, which on all existing configs is set to 0x2ffc2500, not SYSRAM_BASE (0x2ffc0000). Some of it is in the first 128 KiB and some of it is in the second 128 KiB chunk of SYSRAM. Second, SPL_MAX_SIZE, does not restrict the BSS size. While a valiant attempt is made via SPL_BSS_MAX_SIZE, the value of 0x00100000 is much larger than SYSRAM, and doesn't account for the non-BSS sections. Because we're putting the .text and .bss in the same boat, the correct way to limit them together is via SPL_MAX_FOOTPRINT. With the current SPL_TEXT_BASE, we couldn't limit even a very basic SPL to the first 128 KiB, and there is no technical reason to do so. Because of this, simply allow the SPL to use all SYSRAM. Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com> Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
179 lines
4.7 KiB
C
179 lines
4.7 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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#ifndef CONFIG_TFABOOT
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/* PSCI support */
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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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* 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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* default load address used for command tftp, bootm , loadb, ...
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*/
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#define CONFIG_LOADADDR 0xc2000000
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#define CONFIG_SYS_LOAD_ADDR CONFIG_LOADADDR
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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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/*
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* For booting Linux, use the first 256 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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#define CONFIG_SYS_BOOTMAPSZ SZ_256M
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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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/* SPL use DDR */
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#define CONFIG_SYS_SPL_MALLOC_START 0xC0300000
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#define CONFIG_SYS_SPL_MALLOC_SIZE 0x01D00000
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/* Restrict SPL to fit within SYSRAM */
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#define STM32_SYSRAM_END (STM32_SYSRAM_BASE + STM32_SYSRAM_SIZE)
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#define CONFIG_SPL_MAX_FOOTPRINT (STM32_SYSRAM_END - CONFIG_SPL_TEXT_BASE)
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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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/* NAND support */
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#define CONFIG_SYS_NAND_ONFI_DETECTION
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#define CONFIG_SYS_MAX_NAND_DEVICE 1
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/* Ethernet need */
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#ifdef CONFIG_DWC_ETH_QOS
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#define CONFIG_SERVERIP 192.168.1.1
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#define CONFIG_BOOTP_SERVERIP
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#define CONFIG_SYS_AUTOLOAD "no"
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#endif
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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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#ifdef CONFIG_CMD_MMC
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#define BOOT_TARGET_MMC0(func) func(MMC, mmc, 0)
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#define BOOT_TARGET_MMC1(func) func(MMC, mmc, 1)
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#define BOOT_TARGET_MMC2(func) func(MMC, mmc, 2)
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#else
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#define BOOT_TARGET_MMC0(func)
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#define BOOT_TARGET_MMC1(func)
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#define BOOT_TARGET_MMC2(func)
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#endif
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#ifdef CONFIG_NET
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#define BOOT_TARGET_PXE(func) func(PXE, pxe, na)
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#else
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#define BOOT_TARGET_PXE(func)
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#endif
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#ifdef CONFIG_CMD_UBIFS
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#define BOOT_TARGET_UBIFS(func) func(UBIFS, ubifs, 0)
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#else
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#define BOOT_TARGET_UBIFS(func)
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#endif
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#ifdef CONFIG_USB
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#define BOOT_TARGET_USB(func) func(USB, usb, 0)
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#else
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#define BOOT_TARGET_USB(func)
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#endif
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#define BOOT_TARGET_DEVICES(func) \
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BOOT_TARGET_MMC1(func) \
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BOOT_TARGET_UBIFS(func) \
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BOOT_TARGET_MMC0(func) \
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BOOT_TARGET_MMC2(func) \
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BOOT_TARGET_USB(func) \
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BOOT_TARGET_PXE(func)
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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 or spi-nand boot, boot with on ubifs partition on UBI partition
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* for nor boot, use SD card = mmc0
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*/
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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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"run env_check;" \
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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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" test ${boot_device} = spi-nand ;" \
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"then env set boot_targets ubifs0; fi;" \
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"if test ${boot_device} = nor;" \
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"then env set boot_targets mmc0; fi;" \
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"run distro_bootcmd;" \
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"fi;\0"
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#ifdef CONFIG_FASTBOOT_CMD_OEM_FORMAT
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/* eMMC default partitions for fastboot command: oem format */
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#define PARTS_DEFAULT \
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"partitions=" \
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"name=ssbl,size=2M;" \
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"name=bootfs,size=64MB,bootable;" \
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"name=vendorfs,size=16M;" \
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"name=rootfs,size=746M;" \
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"name=userfs,size=-\0"
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#else
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#define PARTS_DEFAULT
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#endif
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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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"altbootcmd=run bootcmd\0" \
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"env_check=if env info -p -d -q; then env save; fi\0" \
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STM32MP_BOOTCMD \
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PARTS_DEFAULT \
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BOOTENV \
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"boot_net_usb_start=true\0"
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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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