38 lines
946 B
ArmAsm
38 lines
946 B
ArmAsm
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/* Bootloader to resume MIO A701
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*
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* 2007-1-12 Robert Jarzmik
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*
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* This code is licenced under the GPLv2.
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*/
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#include <linux/linkage.h>
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#include <asm/assembler.h>
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/*
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* Note: Yes, part of the following code is located into the .data section.
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* This is to allow jumpaddr to be accessed with a relative load
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* while we can't rely on any MMU translation. We could have put
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* sleep_save_sp in the .text section as well, but some setups might
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* insist on it to be truly read-only.
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*/
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.data
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ENTRY(mioa701_bootstrap)
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0:
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b 1f
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ENTRY(mioa701_jumpaddr)
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.word 0x40f00008 @ PSPR in no-MMU mode
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1:
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mov r0, #0xa0000000 @ Don't suppose memory access works
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orr r0, r0, #0x00200000 @ even if it's supposed to
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orr r0, r0, #0x0000b000
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mov r1, #0
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str r1, [r0] @ Early disable resume for next boot
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ldr r0, mioa701_jumpaddr @ (Murphy's Law)
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ldr r0, [r0]
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mov pc, r0
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2:
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ENTRY(mioa701_bootstrap_lg)
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.data
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.word 2b-0b
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