zephyr: Add CONFIG_MCUBOOT_CLEANUP_RAM #2127
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boot/zephyr/main.c
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| @@ -236,7 +236,34 @@ static void do_boot(struct boot_rsp *rsp) | |||
| __set_CONTROL(0x00); /* application will configures core on its own */ | |||
| __ISB(); | |||
| #endif | |||
| #if CONFIG_MCUBOOT_CLEANUP_RAM | |||
| __asm__ volatile ( | |||
| /* rt->reset -> r0 */ | |||
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| /* rt->reset -> r0 */ | |
| /* vt->reset -> r0 */ |
boot/zephyr/main.c
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| " bx r0\n" | ||
| : | ||
| : "r" (vt->reset), "i" (CONFIG_SRAM_BASE_ADDRESS), | ||
| "i" (CONFIG_SRAM_SIZE * 1024), "i" (0), "i" (sizeof(uint32_t)) |
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"i" (sizeof(uint32_t)) operand is not used, assembly above used immediate value - which is just perfect.
%4, it is used
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Yeah, so I have hardcoded this to #4 and remove the parameter.
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Does not work with ARMv6:
/tmp/ccmsO9XM.s: Assembler messages:
/tmp/ccmsO9XM.s:495: Error: selected processor does not support `cbz r2,out' in Thumb mode
/tmp/ccmsO9XM.s:488: Error: invalid immediate: 536870912 is out of range
/tmp/ccmsO9XM.s:488: Error: value of 20000000 too large for field of 2 bytes at 000000c2
/tmp/ccmsO9XM.s:489: Error: invalid immediate: 32768 is out of range
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I am now confused too, because it compiled and worked and the code is actually picked up. |
Yeah, sure, because I did the change to wrong Kconfig. |
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Add Kconfig option to cleanup RAM in MCUboot before passing control to an application. Signed-off-by: Dominik Ermel <[email protected]>
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Add Kconfig option to cleanup RAM in MCUboot before passing control to an application.