mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
f4db6c976c
This patch adds runtime detection of the Marvell UART boot-mode (xmodem protocol). If this boot-mode is detected, SPL will return to the BootROM to continue the UART booting. With this patch its now possible, to generate a U-Boot image that can be booted either from the strapped boot-device (e.g. SPI NOR, MMC, etc) or via the xmodem protocol from the UART. In the UART case, the kwboot tool will dynamically insert the UART boot-device type into the image. And also patch the load address in the header, so that the mkimage header will be skipped (as its not expected by the Marvell BootROM). This simplifies the development for Armada XP / 38x based boards. As no special images need to be generated by selecting the MVEBU_BOOTROM_UARTBOOT Kconfig option. Since the Kconfig option MVEBU_BOOTROM_UARTBOOT is not needed any more, its now completely removed. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Luka Perkov <luka.perkov@sartura.hr> Cc: Dirk Eibach <dirk.eibach@gdsys.cc> Cc: Phil Sutter <phil@nwl.cc> Cc: Kevin Smith <kevin.smith@elecsyscorp.com>
72 lines
1.4 KiB
ArmAsm
72 lines
1.4 KiB
ArmAsm
/*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <config.h>
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#include <linux/linkage.h>
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ENTRY(save_boot_params)
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stmfd sp!, {r0 - r12, lr} /* @ save registers on stack */
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ldr r12, =CONFIG_SPL_BOOTROM_SAVE
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str sp, [r12]
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b save_boot_params_ret
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ENDPROC(save_boot_params)
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ENTRY(return_to_bootrom)
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ldr r12, =CONFIG_SPL_BOOTROM_SAVE
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ldr sp, [r12]
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mov r0, #0x0 /* @ return value: 0x0 NO_ERR */
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ldmfd sp!, {r0 - r12, pc} /* @ restore regs and return */
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ENDPROC(return_to_bootrom)
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/*
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* cache_inv - invalidate Cache line
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* r0 - dest
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*/
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.global cache_inv
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.type cache_inv, %function
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cache_inv:
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stmfd sp!, {r1-r12}
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mcr p15, 0, r0, c7, c6, 1
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ldmfd sp!, {r1-r12}
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bx lr
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/*
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* flush_l1_v6 - l1 cache clean invalidate
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* r0 - dest
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*/
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.global flush_l1_v6
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.type flush_l1_v6, %function
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flush_l1_v6:
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stmfd sp!, {r1-r12}
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mcr p15, 0, r0, c7, c10, 5 /* @ data memory barrier */
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mcr p15, 0, r0, c7, c14, 1 /* @ clean & invalidate D line */
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mcr p15, 0, r0, c7, c10, 4 /* @ data sync barrier */
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ldmfd sp!, {r1-r12}
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bx lr
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/*
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* flush_l1_v7 - l1 cache clean invalidate
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* r0 - dest
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*/
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.global flush_l1_v7
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.type flush_l1_v7, %function
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flush_l1_v7:
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stmfd sp!, {r1-r12}
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dmb /* @data memory barrier */
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mcr p15, 0, r0, c7, c14, 1 /* @ clean & invalidate D line */
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dsb /* @data sync barrier */
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ldmfd sp!, {r1-r12}
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bx lr
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