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/* 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 0xe28f0070 // add r0, pc, #112 // @(fel_stash - .)
.word 0xe59f106c // ldr r1, [pc, #108] // fel_stash - .
.word 0xe0800001 // add r0, r0, r1
.word 0xe580d000 // str sp, [r0]
.word 0xe580e004 // str lr, [r0, #4]
.word 0xe10fe000 // mrs lr, CPSR
.word 0xe580e008 // str lr, [r0, #8]
.word 0xee11ef10 // mrc 15, 0, lr, cr1, cr0, {0}
.word 0xe580e00c // str lr, [r0, #12]
.word 0xee1cef10 // mrc 15, 0, lr, cr12, cr0, {0}
.word 0xe580e010 // str lr, [r0, #16]
.word 0xe59f1034 // ldr r1, [pc, #52] ; RVBAR_ADDRESS
.word 0xe59f0034 // ldr r0, [pc, #52] ; SUNXI_SRAMC_BASE
.word 0xe5900024 // ldr r0, [r0, #36] ; SRAM_VER_REG
.word 0xe21000ff // ands r0, r0, #255 ; 0xff
.word 0x159f102c // ldrne r1, [pc, #44] ; RVBAR_ALTERNATIVE
.word 0xe59f002c // ldr r0, [pc, #44] ; 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
.word CONFIG_SUNXI_RVBAR_ADDRESS // writable RVBAR mapping addr
.word SUNXI_SRAMC_BASE
.word CONFIG_SUNXI_RVBAR_ALTERNATIVE // address for die variant
#ifdef CONFIG_SPL_BUILD
.word CONFIG_SPL_TEXT_BASE
#else
.word CONFIG_TEXT_BASE
#endif
.word fel_stash - .
#else
/* normal execution */
b reset
#endif
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