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authorLinus Torvalds <torvalds@linux-foundation.org>2013-02-21 14:58:40 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-02-21 14:58:40 -0800
commitb274776c54c320763bc12eb035c0e244f76ccb43 (patch)
treec75b70d0824a7ae029229b19d61884039abf2127 /arch/arm/mach-tegra/headsmp.S
parentb24174b0cbbe383c5bb6097aeb24480b8fd2d338 (diff)
parent3b1209e7994c4d31ff9932a7f566ae1c96b3c443 (diff)
Merge tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC cleanups from Arnd Bergmann: "A large number of cleanups, all over the platforms. This is dominated largely by the Samsung platforms (s3c, s5p, exynos) and a few of the others moving code out of arch/arm into more appropriate subsystems. The clocksource and irqchip drivers are now abstracted to the point where platforms that are already cleaned up do not need to even specify the driver they use, it can all get configured from the device tree as we do for normal device drivers. The clocksource changes basically touch every single platform in the process. We further clean up the use of platform specific header files here, with the goal of turning more of the platforms over to being "multiplatform" enabled, which implies that they cannot expose their headers to architecture independent code any more. It is expected that no functional changes are part of the cleanup. The overall reduction in total code lines is mostly the result of removing broken and obsolete code." * tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (133 commits) ARM: mvebu: correct gated clock documentation ARM: kirkwood: add missing include for nsa310 ARM: exynos: move exynos4210-combiner to drivers/irqchip mfd: db8500-prcmu: update resource passing drivers/db8500-cpufreq: delete dangling include ARM: at91: remove NEOCORE 926 board sunxi: Cleanup the reset code and add meaningful registers defines ARM: S3C24XX: header mach/regs-mem.h local ARM: S3C24XX: header mach/regs-power.h local ARM: S3C24XX: header mach/regs-s3c2412-mem.h local ARM: S3C24XX: Remove plat-s3c24xx directory in arch/arm/ ARM: S3C24XX: transform s3c2443 subirqs into new structure ARM: S3C24XX: modify s3c2443 irq init to initialize all irqs ARM: S3C24XX: move s3c2443 irq code to irq.c ARM: S3C24XX: transform s3c2416 irqs into new structure ARM: S3C24XX: modify s3c2416 irq init to initialize all irqs ARM: S3C24XX: move s3c2416 irq init to common irq code ARM: S3C24XX: Modify s3c_irq_wake to use the hwirq property ARM: S3C24XX: Move irq syscore-ops to irq-pm clocksource: always define CLOCKSOURCE_OF_DECLARE ...
Diffstat (limited to 'arch/arm/mach-tegra/headsmp.S')
-rw-r--r--arch/arm/mach-tegra/headsmp.S221
1 files changed, 0 insertions, 221 deletions
diff --git a/arch/arm/mach-tegra/headsmp.S b/arch/arm/mach-tegra/headsmp.S
index 4a317fae6860..b2834810b02b 100644
--- a/arch/arm/mach-tegra/headsmp.S
+++ b/arch/arm/mach-tegra/headsmp.S
@@ -1,22 +1,9 @@
#include <linux/linkage.h>
#include <linux/init.h>
-#include <asm/cache.h>
-#include <asm/asm-offsets.h>
-#include <asm/hardware/cache-l2x0.h>
-
-#include "flowctrl.h"
-#include "iomap.h"
-#include "reset.h"
#include "sleep.h"
-#define APB_MISC_GP_HIDREV 0x804
-#define PMC_SCRATCH41 0x140
-
-#define RESET_DATA(x) ((TEGRA_RESET_##x)*4)
-
.section ".text.head", "ax"
- __CPUINIT
/*
* Tegra specific entry point for secondary CPUs.
@@ -61,7 +48,6 @@ ENTRY(v7_invalidate_l1)
mov pc, lr
ENDPROC(v7_invalidate_l1)
-
ENTRY(tegra_secondary_startup)
bl v7_invalidate_l1
/* Enable coresight */
@@ -69,210 +55,3 @@ ENTRY(tegra_secondary_startup)
mcr p14, 0, r0, c7, c12, 6
b secondary_startup
ENDPROC(tegra_secondary_startup)
-
-#ifdef CONFIG_PM_SLEEP
-/*
- * tegra_resume
- *
- * CPU boot vector when restarting the a CPU following
- * an LP2 transition. Also branched to by LP0 and LP1 resume after
- * re-enabling sdram.
- */
-ENTRY(tegra_resume)
- bl v7_invalidate_l1
- /* Enable coresight */
- mov32 r0, 0xC5ACCE55
- mcr p14, 0, r0, c7, c12, 6
-
- cpu_id r0
- cmp r0, #0 @ CPU0?
- bne cpu_resume @ no
-
-#ifdef CONFIG_ARCH_TEGRA_3x_SOC
- /* Are we on Tegra20? */
- mov32 r6, TEGRA_APB_MISC_BASE
- ldr r0, [r6, #APB_MISC_GP_HIDREV]
- and r0, r0, #0xff00
- cmp r0, #(0x20 << 8)
- beq 1f @ Yes
- /* Clear the flow controller flags for this CPU. */
- mov32 r2, TEGRA_FLOW_CTRL_BASE + FLOW_CTRL_CPU0_CSR @ CPU0 CSR
- ldr r1, [r2]
- /* Clear event & intr flag */
- orr r1, r1, \
- #FLOW_CTRL_CSR_INTR_FLAG | FLOW_CTRL_CSR_EVENT_FLAG
- movw r0, #0x0FFD @ enable, cluster_switch, immed, & bitmaps
- bic r1, r1, r0
- str r1, [r2]
-1:
-#endif
-
-#ifdef CONFIG_HAVE_ARM_SCU
- /* enable SCU */
- mov32 r0, TEGRA_ARM_PERIF_BASE
- ldr r1, [r0]
- orr r1, r1, #1
- str r1, [r0]
-#endif
-
- /* L2 cache resume & re-enable */
- l2_cache_resume r0, r1, r2, l2x0_saved_regs_addr
-
- b cpu_resume
-ENDPROC(tegra_resume)
-#endif
-
-#ifdef CONFIG_CACHE_L2X0
- .globl l2x0_saved_regs_addr
-l2x0_saved_regs_addr:
- .long 0
-#endif
-
- .align L1_CACHE_SHIFT
-ENTRY(__tegra_cpu_reset_handler_start)
-
-/*
- * __tegra_cpu_reset_handler:
- *
- * Common handler for all CPU reset events.
- *
- * Register usage within the reset handler:
- *
- * R7 = CPU present (to the OS) mask
- * R8 = CPU in LP1 state mask
- * R9 = CPU in LP2 state mask
- * R10 = CPU number
- * R11 = CPU mask
- * R12 = pointer to reset handler data
- *
- * NOTE: This code is copied to IRAM. All code and data accesses
- * must be position-independent.
- */
-
- .align L1_CACHE_SHIFT
-ENTRY(__tegra_cpu_reset_handler)
-
- cpsid aif, 0x13 @ SVC mode, interrupts disabled
- mrc p15, 0, r10, c0, c0, 5 @ MPIDR
- and r10, r10, #0x3 @ R10 = CPU number
- mov r11, #1
- mov r11, r11, lsl r10 @ R11 = CPU mask
- adr r12, __tegra_cpu_reset_handler_data
-
-#ifdef CONFIG_SMP
- /* Does the OS know about this CPU? */
- ldr r7, [r12, #RESET_DATA(MASK_PRESENT)]
- tst r7, r11 @ if !present
- bleq __die @ CPU not present (to OS)
-#endif
-
-#ifdef CONFIG_ARCH_TEGRA_2x_SOC
- /* Are we on Tegra20? */
- mov32 r6, TEGRA_APB_MISC_BASE
- ldr r0, [r6, #APB_MISC_GP_HIDREV]
- and r0, r0, #0xff00
- cmp r0, #(0x20 << 8)
- bne 1f
- /* If not CPU0, don't let CPU0 reset CPU1 now that CPU1 is coming up. */
- mov32 r6, TEGRA_PMC_BASE
- mov r0, #0
- cmp r10, #0
- strne r0, [r6, #PMC_SCRATCH41]
-1:
-#endif
-
- /* Waking up from LP2? */
- ldr r9, [r12, #RESET_DATA(MASK_LP2)]
- tst r9, r11 @ if in_lp2
- beq __is_not_lp2
- ldr lr, [r12, #RESET_DATA(STARTUP_LP2)]
- cmp lr, #0
- bleq __die @ no LP2 startup handler
- bx lr
-
-__is_not_lp2:
-
-#ifdef CONFIG_SMP
- /*
- * Can only be secondary boot (initial or hotplug) but CPU 0
- * cannot be here.
- */
- cmp r10, #0
- bleq __die @ CPU0 cannot be here
- ldr lr, [r12, #RESET_DATA(STARTUP_SECONDARY)]
- cmp lr, #0
- bleq __die @ no secondary startup handler
- bx lr
-#endif
-
-/*
- * We don't know why the CPU reset. Just kill it.
- * The LR register will contain the address we died at + 4.
- */
-
-__die:
- sub lr, lr, #4
- mov32 r7, TEGRA_PMC_BASE
- str lr, [r7, #PMC_SCRATCH41]
-
- mov32 r7, TEGRA_CLK_RESET_BASE
-
- /* Are we on Tegra20? */
- mov32 r6, TEGRA_APB_MISC_BASE
- ldr r0, [r6, #APB_MISC_GP_HIDREV]
- and r0, r0, #0xff00
- cmp r0, #(0x20 << 8)
- bne 1f
-
-#ifdef CONFIG_ARCH_TEGRA_2x_SOC
- mov32 r0, 0x1111
- mov r1, r0, lsl r10
- str r1, [r7, #0x340] @ CLK_RST_CPU_CMPLX_SET
-#endif
-1:
-#ifdef CONFIG_ARCH_TEGRA_3x_SOC
- mov32 r6, TEGRA_FLOW_CTRL_BASE
-
- cmp r10, #0
- moveq r1, #FLOW_CTRL_HALT_CPU0_EVENTS
- moveq r2, #FLOW_CTRL_CPU0_CSR
- movne r1, r10, lsl #3
- addne r2, r1, #(FLOW_CTRL_CPU1_CSR-8)
- addne r1, r1, #(FLOW_CTRL_HALT_CPU1_EVENTS-8)
-
- /* Clear CPU "event" and "interrupt" flags and power gate
- it when halting but not before it is in the "WFI" state. */
- ldr r0, [r6, +r2]
- orr r0, r0, #FLOW_CTRL_CSR_INTR_FLAG | FLOW_CTRL_CSR_EVENT_FLAG
- orr r0, r0, #FLOW_CTRL_CSR_ENABLE
- str r0, [r6, +r2]
-
- /* Unconditionally halt this CPU */
- mov r0, #FLOW_CTRL_WAITEVENT
- str r0, [r6, +r1]
- ldr r0, [r6, +r1] @ memory barrier
-
- dsb
- isb
- wfi @ CPU should be power gated here
-
- /* If the CPU didn't power gate above just kill it's clock. */
-
- mov r0, r11, lsl #8
- str r0, [r7, #348] @ CLK_CPU_CMPLX_SET
-#endif
-
- /* If the CPU still isn't dead, just spin here. */
- b .
-ENDPROC(__tegra_cpu_reset_handler)
-
- .align L1_CACHE_SHIFT
- .type __tegra_cpu_reset_handler_data, %object
- .globl __tegra_cpu_reset_handler_data
-__tegra_cpu_reset_handler_data:
- .rept TEGRA_RESET_DATA_SIZE
- .long 0
- .endr
- .align L1_CACHE_SHIFT
-
-ENTRY(__tegra_cpu_reset_handler_end)