diff options
| author | Magnus Damm <damm@opensource.se> | 2013-06-10 13:19:46 +0400 |
|---|---|---|
| committer | Simon Horman <horms+renesas@verge.net.au> | 2013-06-17 11:07:27 +0400 |
| commit | bfabbcc679e86cfcaf0e7fd41563f14c29bc74d4 (patch) | |
| tree | cc0c11759322852c170aea7563624006ee6770c2 /arch/arm/mach-shmobile | |
| parent | ebe72ab90a5c1e3b69d89b841552fd02805dc4e4 (diff) | |
| download | linux-bfabbcc679e86cfcaf0e7fd41563f14c29bc74d4.tar.xz | |
ARM: shmobile: Add SCU boot function using argument
Add a shmoible_boot_scu function that assumes that the base address
of the SCU is passed in r0. This code is free from inline virtual
to physical address conversion.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Diffstat (limited to 'arch/arm/mach-shmobile')
| -rw-r--r-- | arch/arm/mach-shmobile/headsmp-scu.S | 13 | ||||
| -rw-r--r-- | arch/arm/mach-shmobile/include/mach/common.h | 1 |
2 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/headsmp-scu.S b/arch/arm/mach-shmobile/headsmp-scu.S index 7d113f898e7f..c5c9106bf6c4 100644 --- a/arch/arm/mach-shmobile/headsmp-scu.S +++ b/arch/arm/mach-shmobile/headsmp-scu.S @@ -51,6 +51,19 @@ ENTRY(shmobile_secondary_vector_scu) 2: .long shmobile_scu_base - PAGE_OFFSET + PLAT_PHYS_OFFSET ENDPROC(shmobile_secondary_vector_scu) +ENTRY(shmobile_boot_scu) + @ r0 = SCU base address + mrc p15, 0, r1, c0, c0, 5 @ read MIPDR + and r1, r1, #3 @ mask out cpu ID + lsl r1, r1, #3 @ we will shift by cpu_id * 8 bits + ldr r2, [r0, #8] @ SCU Power Status Register + mov r3, #3 + bic r2, r2, r3, lsl r1 @ Clear bits of our CPU (Run Mode) + str r2, [r0, #8] @ write back + + b shmobile_invalidate_start +ENDPROC(shmobile_boot_scu) + .text .globl shmobile_scu_base shmobile_scu_base: diff --git a/arch/arm/mach-shmobile/include/mach/common.h b/arch/arm/mach-shmobile/include/mach/common.h index 54472ef4a270..8ef1c3c13ea8 100644 --- a/arch/arm/mach-shmobile/include/mach/common.h +++ b/arch/arm/mach-shmobile/include/mach/common.h @@ -11,6 +11,7 @@ extern void shmobile_boot_vector(void); extern unsigned long shmobile_boot_fn; extern unsigned long shmobile_boot_arg; extern void shmobile_secondary_vector_scu(void); +extern void shmobile_boot_scu(void); struct clk; extern int shmobile_clk_init(void); extern void shmobile_handle_irq_intc(struct pt_regs *); |