summaryrefslogtreecommitdiff
path: root/arch/arm/include/asm/arch-sunxi/boot0.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/include/asm/arch-sunxi/boot0.h')
-rw-r--r--arch/arm/include/asm/arch-sunxi/boot0.h30
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-sunxi/boot0.h b/arch/arm/include/asm/arch-sunxi/boot0.h
index 6a13db5..9c6d82d 100644
--- a/arch/arm/include/asm/arch-sunxi/boot0.h
+++ b/arch/arm/include/asm/arch-sunxi/boot0.h
@@ -4,6 +4,36 @@
* SPDX-License-Identifier: GPL-2.0+
*/
+#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
+ .word 0x017000a0 // writeable RVBAR mapping address
+#ifdef CONFIG_SPL_BUILD
+ .word CONFIG_SPL_TEXT_BASE
+#else
+ .word CONFIG_SYS_TEXT_BASE
+#endif
+#else
+/* normal execution */
+ b reset
+#endif