diff options
| author | Nobuhiro Iwamatsu <iwamatsu@nigauri.org> | 2015-10-09 16:40:09 +0900 |
|---|---|---|
| committer | Nobuhiro Iwamatsu <iwamatsu@nigauri.org> | 2016-08-17 10:25:28 +0900 |
| commit | badbb63c2c29738a2956504126a30ddb14ca34c1 (patch) | |
| tree | 29cb6dbc3cf6b34944b987e0a3619776905a59aa /arch/arm/mach-rmobile/lowlevel_init.S | |
| parent | 59d07ee08e858bf2c121d0cdc6c8ddd3b26ee5b1 (diff) | |
ARM: rmobile: Move SoC sources to mach-rmobile
Move from arch/arm/cpu/armv7/rmobile/ to arch/arm/mach-rmobile/.
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Diffstat (limited to 'arch/arm/mach-rmobile/lowlevel_init.S')
| -rw-r--r-- | arch/arm/mach-rmobile/lowlevel_init.S | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/arch/arm/mach-rmobile/lowlevel_init.S b/arch/arm/mach-rmobile/lowlevel_init.S new file mode 100644 index 0000000000..0d654403ee --- /dev/null +++ b/arch/arm/mach-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 |