u-boot/include/configs/stm32mp1.h
Alexandru Gagniuc a08d1a916b configs: stm32mp1: Fix misleading SPL size limitations
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>
2021-04-09 11:59:13 +02:00

178 lines
4.7 KiB
C

/* SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause */
/*
* Copyright (C) 2018, STMicroelectronics - All Rights Reserved
*
* Configuration settings for the STM32MP15x CPU
*/
#ifndef __CONFIG_H
#define __CONFIG_H
#include <linux/sizes.h>
#include <asm/arch/stm32.h>
#ifndef CONFIG_TFABOOT
/* PSCI support */
#define CONFIG_ARMV7_SECURE_BASE STM32_SYSRAM_BASE
#define CONFIG_ARMV7_SECURE_MAX_SIZE STM32_SYSRAM_SIZE
#endif
/*
* Configuration of the external SRAM memory used by U-Boot
*/
#define CONFIG_SYS_SDRAM_BASE STM32_DDR_BASE
#define CONFIG_SYS_INIT_SP_ADDR CONFIG_SYS_TEXT_BASE
/*
* Console I/O buffer size
*/
#define CONFIG_SYS_CBSIZE SZ_1K
/*
* default load address used for command tftp, bootm , loadb, ...
*/
#define CONFIG_LOADADDR 0xc2000000
#define CONFIG_SYS_LOAD_ADDR CONFIG_LOADADDR
/* ATAGs */
#define CONFIG_CMDLINE_TAG
#define CONFIG_SETUP_MEMORY_TAGS
#define CONFIG_INITRD_TAG
/*
* For booting Linux, use the first 256 MB of memory, since this is
* the maximum mapped by the Linux kernel during initialization.
*/
#define CONFIG_SYS_BOOTMAPSZ SZ_256M
/* Extend size of kernel image for uncompression */
#define CONFIG_SYS_BOOTM_LEN SZ_32M
/* SPL support */
#ifdef CONFIG_SPL
/* SPL use DDR */
#define CONFIG_SYS_SPL_MALLOC_START 0xC0300000
#define CONFIG_SYS_SPL_MALLOC_SIZE 0x01D00000
/* Restrict SPL to fit within SYSRAM */
#define STM32_SYSRAM_END (STM32_SYSRAM_BASE + STM32_SYSRAM_SIZE)
#define CONFIG_SPL_MAX_FOOTPRINT (STM32_SYSRAM_END - CONFIG_SPL_TEXT_BASE)
#define CONFIG_SPL_STACK (STM32_SYSRAM_BASE + \
STM32_SYSRAM_SIZE)
#endif /* #ifdef CONFIG_SPL */
/*MMC SD*/
#define CONFIG_SYS_MMC_MAX_DEVICE 3
/* NAND support */
#define CONFIG_SYS_NAND_ONFI_DETECTION
#define CONFIG_SYS_MAX_NAND_DEVICE 1
/* Ethernet need */
#ifdef CONFIG_DWC_ETH_QOS
#define CONFIG_SERVERIP 192.168.1.1
#define CONFIG_BOOTP_SERVERIP
#define CONFIG_SYS_AUTOLOAD "no"
#endif
/*****************************************************************************/
#ifdef CONFIG_DISTRO_DEFAULTS
/*****************************************************************************/
#if !defined(CONFIG_SPL_BUILD)
#ifdef CONFIG_CMD_MMC
#define BOOT_TARGET_MMC0(func) func(MMC, mmc, 0)
#define BOOT_TARGET_MMC1(func) func(MMC, mmc, 1)
#define BOOT_TARGET_MMC2(func) func(MMC, mmc, 2)
#else
#define BOOT_TARGET_MMC0(func)
#define BOOT_TARGET_MMC1(func)
#define BOOT_TARGET_MMC2(func)
#endif
#ifdef CONFIG_NET
#define BOOT_TARGET_PXE(func) func(PXE, pxe, na)
#else
#define BOOT_TARGET_PXE(func)
#endif
#ifdef CONFIG_CMD_UBIFS
#define BOOT_TARGET_UBIFS(func) func(UBIFS, ubifs, 0)
#else
#define BOOT_TARGET_UBIFS(func)
#endif
#ifdef CONFIG_USB
#define BOOT_TARGET_USB(func) func(USB, usb, 0)
#else
#define BOOT_TARGET_USB(func)
#endif
#define BOOT_TARGET_DEVICES(func) \
BOOT_TARGET_MMC1(func) \
BOOT_TARGET_UBIFS(func) \
BOOT_TARGET_MMC0(func) \
BOOT_TARGET_MMC2(func) \
BOOT_TARGET_USB(func) \
BOOT_TARGET_PXE(func)
/*
* bootcmd for stm32mp1:
* for serial/usb: execute the stm32prog command
* for mmc boot (eMMC, SD card), boot only on the same device
* for nand or spi-nand boot, boot with on ubifs partition on UBI partition
* for nor boot, use SD card = mmc0
*/
#define STM32MP_BOOTCMD "bootcmd_stm32mp=" \
"echo \"Boot over ${boot_device}${boot_instance}!\";" \
"if test ${boot_device} = serial || test ${boot_device} = usb;" \
"then stm32prog ${boot_device} ${boot_instance}; " \
"else " \
"run env_check;" \
"if test ${boot_device} = mmc;" \
"then env set boot_targets \"mmc${boot_instance}\"; fi;" \
"if test ${boot_device} = nand ||" \
" test ${boot_device} = spi-nand ;" \
"then env set boot_targets ubifs0; fi;" \
"if test ${boot_device} = nor;" \
"then env set boot_targets mmc0; fi;" \
"run distro_bootcmd;" \
"fi;\0"
#ifdef CONFIG_FASTBOOT_CMD_OEM_FORMAT
/* eMMC default partitions for fastboot command: oem format */
#define PARTS_DEFAULT \
"partitions=" \
"name=ssbl,size=2M;" \
"name=bootfs,size=64MB,bootable;" \
"name=vendorfs,size=16M;" \
"name=rootfs,size=746M;" \
"name=userfs,size=-\0"
#else
#define PARTS_DEFAULT
#endif
#include <config_distro_bootcmd.h>
/*
* memory layout for 32M uncompressed/compressed kernel,
* 1M fdt, 1M script, 1M pxe and 1M for splashimage
* and the ramdisk at the end.
*/
#define CONFIG_EXTRA_ENV_SETTINGS \
"kernel_addr_r=0xc2000000\0" \
"fdt_addr_r=0xc4000000\0" \
"scriptaddr=0xc4100000\0" \
"pxefile_addr_r=0xc4200000\0" \
"splashimage=0xc4300000\0" \
"ramdisk_addr_r=0xc4400000\0" \
"altbootcmd=run bootcmd\0" \
"env_check=if env info -p -d -q; then env save; fi\0" \
STM32MP_BOOTCMD \
PARTS_DEFAULT \
BOOTENV \
"boot_net_usb_start=true\0"
#endif /* ifndef CONFIG_SPL_BUILD */
#endif /* ifdef CONFIG_DISTRO_DEFAULTS*/
#endif /* __CONFIG_H */