1/* SPDX-License-Identifier: GPL-2.0+ */ 2/* 3 * Configuration settings for the Allwinner A64 (sun50i) CPU 4 */ 5 6#include <asm/arch/cpu.h> 7 8#if defined(CONFIG_RESERVE_ALLWINNER_BOOT0_HEADER) && !defined(CONFIG_SPL_BUILD) 9/* reserve space for BOOT0 header information */ 10 b reset 11 .space 1532 12#elif defined(CONFIG_ARM_BOOT_HOOK_RMR) 13/* 14 * Switch into AArch64 if needed. 15 * Refer to arch/arm/mach-sunxi/rmr_switch.S for the original source. 16 */ 17 tst x0, x0 // this is "b #0x84" in ARM 18 b reset 19 .space 0x7c 20 21 .word 0xe28f0070 // add r0, pc, #112 // @(fel_stash - .) 22 .word 0xe59f106c // ldr r1, [pc, #108] // fel_stash - . 23 .word 0xe0800001 // add r0, r0, r1 24 .word 0xe580d000 // str sp, [r0] 25 .word 0xe580e004 // str lr, [r0, #4] 26 .word 0xe10fe000 // mrs lr, CPSR 27 .word 0xe580e008 // str lr, [r0, #8] 28 .word 0xee11ef10 // mrc 15, 0, lr, cr1, cr0, {0} 29 .word 0xe580e00c // str lr, [r0, #12] 30 .word 0xee1cef10 // mrc 15, 0, lr, cr12, cr0, {0} 31 .word 0xe580e010 // str lr, [r0, #16] 32 33 .word 0xe59f1034 // ldr r1, [pc, #52] ; RVBAR_ADDRESS 34 .word 0xe59f0034 // ldr r0, [pc, #52] ; SUNXI_SRAMC_BASE 35 .word 0xe5900024 // ldr r0, [r0, #36] ; SRAM_VER_REG 36 .word 0xe21000ff // ands r0, r0, #255 ; 0xff 37 .word 0x159f102c // ldrne r1, [pc, #44] ; RVBAR_ALTERNATIVE 38 .word 0xe59f002c // ldr r0, [pc, #44] ; CONFIG_*TEXT_BASE 39 .word 0xe5810000 // str r0, [r1] 40 .word 0xf57ff04f // dsb sy 41 .word 0xf57ff06f // isb sy 42 .word 0xee1c0f50 // mrc 15, 0, r0, cr12, cr0, {2} ; RMR 43 .word 0xe3800003 // orr r0, r0, #3 44 .word 0xee0c0f50 // mcr 15, 0, r0, cr12, cr0, {2} ; RMR 45 .word 0xf57ff06f // isb sy 46 .word 0xe320f003 // wfi 47 .word 0xeafffffd // b @wfi 48 49 .word CONFIG_SUNXI_RVBAR_ADDRESS // writable RVBAR mapping addr 50 .word SUNXI_SRAMC_BASE 51 .word CONFIG_SUNXI_RVBAR_ALTERNATIVE // address for die variant 52#ifdef CONFIG_SPL_BUILD 53 .word CONFIG_SPL_TEXT_BASE 54#else 55 .word CONFIG_TEXT_BASE 56#endif 57 .word fel_stash - . 58#else 59/* normal execution */ 60 b reset 61#endif 62