mirror of
https://github.com/brain-hackers/u-boot-brain
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2475367670
When u-boot initializes the RAM (early in boot) it looks for the "pram" env variable to know which is area it cannot use. If the "pram" env variable is not found, the default CONFIG_PRAM value is used. This value used to be 0 (no protection at all). This patch sets it to a value that covers PHRAM and PNVRAM that must be protected in our case. Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com> Signed-off-by: Holger Brunck <holger.brunck@keymile.com> Reviewed-by: York Sun <yorksun@freescale.com>
85 lines
2.8 KiB
C
85 lines
2.8 KiB
C
/*
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* (C) Copyright 2011
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* Heiko Schocher, DENX Software Engineering, hs@denx.de.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef __CONFIG_KEYMILE_POWERPC_H
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#define __CONFIG_KEYMILE_POWERPC_H
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/* Do boardspecific init for all boards */
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#define CONFIG_BOARD_EARLY_INIT_R
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#define CONFIG_LAST_STAGE_INIT
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#define CONFIG_BOOTCOUNT_LIMIT
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#define CONFIG_CMD_DTT
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#define CONFIG_JFFS2_CMDLINE
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/* standard km ethernet_present for piggy */
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#define CONFIG_KM_COMMON_ETH_INIT
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/* EEprom support 24C08, 24C16, 24C64 */
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#define CONFIG_SYS_I2C_MULTI_EEPROMS
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#define CONFIG_SYS_EEPROM_PAGE_WRITE_ENABLE
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#define CONFIG_SYS_EEPROM_PAGE_WRITE_BITS 3 /* 8 Byte write page */
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#define CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS 10
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#define CONFIG_ENV_SIZE 0x04000 /* Size of Environment */
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#define CONFIG_FLASH_CFI_MTD
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#define CONFIG_SYS_MEMTEST_START 0x00100000 /* memtest works on */
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#define CONFIG_SYS_MEMTEST_END 0x00f00000 /* 1 ... 15 MB in DRAM */
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#define CONFIG_SYS_LOAD_ADDR 0x100000 /* default load address */
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/* Reserve 4 MB for malloc */
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#define CONFIG_SYS_MALLOC_LEN (4 * 1024 * 1024)
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/******************************************************************************
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* (PRAM usage)
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* ... -------------------------------------------------------
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* ... |ROOTFSSIZE | PNVRAM |PHRAM |RESERVED_PRAM | END_OF_RAM
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* ... |<------------------- pram -------------------------->|
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* ... -------------------------------------------------------
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* @END_OF_RAM:
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* @CONFIG_KM_RESERVED_PRAM: reserved pram for special purpose
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* @CONFIG_KM_PHRAM: address for /var
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* @CONFIG_KM_PNVRAM: address for PNVRAM (for the application)
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* @CONFIG_KM_ROOTFSSIZE: address for rootfilesystem in RAM
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*/
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/* size of rootfs in RAM */
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#define CONFIG_KM_ROOTFSSIZE 0x0
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/* pseudo-non volatile RAM [hex] */
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#define CONFIG_KM_PNVRAM 0x80000
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/* physical RAM MTD size [hex] */
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#define CONFIG_KM_PHRAM 0x100000
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/* resereved pram area at the end of memroy [hex] */
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#define CONFIG_KM_RESERVED_PRAM 0x0
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/* set the default PRAM value to at least PNVRAM + PHRAM when pram env variable
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* is not valid yet, which is the case for when u-boot copies itself to RAM */
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#define CONFIG_PRAM ((CONFIG_KM_PNVRAM + CONFIG_KM_PHRAM)>>10)
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#define CONFIG_KM_CRAMFS_ADDR 0x800000
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#define CONFIG_KM_KERNEL_ADDR 0x400000 /* 3968Kbytes */
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#define CONFIG_KM_FDT_ADDR 0x7E0000 /* 128Kbytes */
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/* architecture specific default bootargs */
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#define CONFIG_KM_DEF_BOOT_ARGS_CPU ""
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#define CONFIG_KM_DEF_ENV_CPU \
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"u-boot="__stringify(CONFIG_HOSTNAME) "/u-boot.bin\0" \
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"update=" \
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"protect off " __stringify(BOOTFLASH_START) " +${filesize} && "\
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"erase " __stringify(BOOTFLASH_START) " +${filesize} && "\
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"cp.b ${load_addr_r} " __stringify(BOOTFLASH_START) \
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" ${filesize} && " \
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"protect on " __stringify(BOOTFLASH_START) " +${filesize}\0"\
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"set_fdthigh=true\0" \
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""
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#endif /* __CONFIG_KEYMILE_POWERPC_H */
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