Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / arch / arm / cpu / armv7 / rmobile / lowlevel_init.S

diff --git a/qemu/roms/u-boot/arch/arm/cpu/armv7/rmobile/lowlevel_init.S b/qemu/roms/u-boot/arch/arm/cpu/armv7/rmobile/lowlevel_init.S
new file mode 100644 (file)
index 0000000..0d65440
--- /dev/null
+++ b/qemu/roms/u-boot/arch/arm/cpu/armv7/rmobile/lowlevel_init.S
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2012 Nobuhiro Iwamatsu <nobuhiro.Iwamatsu.yj@renesas.com>
+ * Copyright (C) 2012 Renesas Solutions Corp.
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <config.h>
+#include <linux/linkage.h>
+
+ENTRY(lowlevel_init)
+       ldr             r0, =MERAM_BASE
+       mov             r1, #0x0
+       str             r1, [r0]
+
+       mrc             p15, 0, r0, c0, c0, 5
+       ands    r0, r0, #0xF
+       beq             lowlevel_init__
+       b               wait_interrupt
+
+       .pool
+       .align 4
+
+wait_interrupt:
+#ifdef ICCICR
+       ldr     r1, =ICCICR
+       mov     r2, #0x0
+       str     r2, [r1]
+       mov     r2, #0xF0
+       adds    r1, r1, #4 /* ICCPMR */
+       str     r2, [r1]
+       ldr     r1, =ICCICR
+       mov     r2, #0x1
+       str     r2, [r1]
+#endif
+
+wait_loop:
+       .long   0xE320F003 /* wfi */
+
+       ldr             r2, [r1, #0xC]
+       str             r2, [r1, #0x10]
+
+       ldr             r0, =MERAM_BASE
+       ldr             r2, [r0]
+       cmp             r2, #0
+       movne   pc, r2
+
+       b               wait_loop
+
+wait_loop_end:
+       .pool
+       .align 4
+
+lowlevel_init__:
+
+       mov r0, #0x200000
+
+loop0:
+       subs r0, r0, #1
+       bne  loop0
+
+       ldr sp, MERAM_STACK
+       b s_init
+
+       .pool
+       .align 4
+
+ENDPROC(lowlevel_init)
+       .ltorg
+
+MERAM_STACK:
+       .word LOW_LEVEL_MERAM_STACK