diff options
Diffstat (limited to 'arch/arm/include/asm/arch-sunxi/boot0.h')
| -rw-r--r-- | arch/arm/include/asm/arch-sunxi/boot0.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-sunxi/boot0.h b/arch/arm/include/asm/arch-sunxi/boot0.h new file mode 100644 index 0000000..54c144a --- /dev/null +++ b/arch/arm/include/asm/arch-sunxi/boot0.h @@ -0,0 +1,42 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Configuration settings for the Allwinner A64 (sun50i) CPU + */ + +#if defined(CONFIG_RESERVE_ALLWINNER_BOOT0_HEADER) && !defined(CONFIG_SPL_BUILD) +/* reserve space for BOOT0 header information */ + b reset + .space 1532 +#elif defined(CONFIG_ARM_BOOT_HOOK_RMR) +/* + * Switch into AArch64 if needed. + * Refer to arch/arm/mach-sunxi/rmr_switch.S for the original source. + */ + tst x0, x0 // this is "b #0x84" in ARM + b reset + .space 0x7c + .word 0xe59f1024 // ldr r1, [pc, #36] ; 0x170000a0 + .word 0xe59f0024 // ldr r0, [pc, #36] ; CONFIG_*_TEXT_BASE + .word 0xe5810000 // str r0, [r1] + .word 0xf57ff04f // dsb sy + .word 0xf57ff06f // isb sy + .word 0xee1c0f50 // mrc 15, 0, r0, cr12, cr0, {2} ; RMR + .word 0xe3800003 // orr r0, r0, #3 + .word 0xee0c0f50 // mcr 15, 0, r0, cr12, cr0, {2} ; RMR + .word 0xf57ff06f // isb sy + .word 0xe320f003 // wfi + .word 0xeafffffd // b @wfi +#ifndef CONFIG_MACH_SUN50I_H6 + .word 0x017000a0 // writeable RVBAR mapping address +#else + .word 0x09010040 // writeable RVBAR mapping address +#endif +#ifdef CONFIG_SPL_BUILD + .word CONFIG_SPL_TEXT_BASE +#else + .word CONFIG_SYS_TEXT_BASE +#endif +#else +/* normal execution */ + b reset +#endif |