X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=arch%2Farm%2Finclude%2Fasm%2Farch-sunxi%2Fboot0.h;h=9c6d82dda18e7604cb3788c7df4d223930e220b0;hb=d53ecad92f06d2e38a5cbc13af7473867c7fa277;hp=ea5675eb9e4ca60c3289b0f65f7d47fc0a8ca4f1;hpb=2313d48445e59f063ec9a3b4940fe8252737db76;p=oweals%2Fu-boot.git

diff --git a/arch/arm/include/asm/arch-sunxi/boot0.h b/arch/arm/include/asm/arch-sunxi/boot0.h
index ea5675eb9e..9c6d82dda1 100644
--- a/arch/arm/include/asm/arch-sunxi/boot0.h
+++ b/arch/arm/include/asm/arch-sunxi/boot0.h
@@ -4,11 +4,36 @@
  * SPDX-License-Identifier:	GPL-2.0+
  */
 
-#ifndef __BOOT0_H
-#define __BOOT0_H
-
+#if defined(CONFIG_RESERVE_ALLWINNER_BOOT0_HEADER) && !defined(CONFIG_SPL_BUILD)
 /* reserve space for BOOT0 header information */
-#define ARM_SOC_BOOT0_HOOK	\
+	b	reset
 	.space	1532
-
-#endif /* __BOOT0_H */
+#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