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authorLinus Torvalds <torvalds@linux-foundation.org>2014-10-26 11:35:51 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-10-26 11:35:51 -0700
commit88e237610b426897f0e9935adb6a60bd38bfe6c6 (patch)
treee14c47586af20c1edeb46f8cab93a08dc6747995 /arch/arm/mach-socfpga/headsmp.S
parentd1e14f1d63eb15ebe97d1a8544ddc143486b0204 (diff)
parentefc176a8ee1f959b89292597bd8a99417475a79a (diff)
Merge tag 'armsoc-for-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson: "Another week, another small batch of fixes. Most of these make zynq, socfpga and sunxi platforms work a bit better: - due to new requirements for regulators, DWMMC on socfpga broke past v3.17 - SMP spinup fix for socfpga - a few DT fixes for zynq - another option (FIXED_REGULATOR) for sunxi is needed that used to be selected by other options but no longer is. - a couple of small DT fixes for at91 - ...and a couple for i.MX" * tag 'armsoc-for-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: ARM: dts: imx28-evk: Let i2c0 run at 100kHz ARM: i.MX6: Fix "emi" clock name typo ARM: multi_v7_defconfig: enable CONFIG_MMC_DW_ROCKCHIP ARM: sunxi_defconfig: enable CONFIG_REGULATOR_FIXED_VOLTAGE ARM: dts: socfpga: Add a 3.3V fixed regulator node ARM: dts: socfpga: Fix SD card detect ARM: dts: socfpga: rename gpio nodes ARM: at91/dt: sam9263: fix PLLB frequencies power: reset: at91-reset: fix power down register MAINTAINERS: add atmel ssc driver maintainer entry arm: socfpga: fix fetching cpu1start_addr for SMP ARM: zynq: DT: trivial: Fix mc node ARM: zynq: DT: Add cadence watchdog node ARM: zynq: DT: Add missing reference for memory-controller ARM: zynq: DT: Add missing reference for ADC ARM: zynq: DT: Add missing address for L2 pl310 ARM: zynq: DT: Remove 222 MHz OPP ARM: zynq: DT: Fix GEM register area size
Diffstat (limited to 'arch/arm/mach-socfpga/headsmp.S')
-rw-r--r--arch/arm/mach-socfpga/headsmp.S25
1 files changed, 15 insertions, 10 deletions
diff --git a/arch/arm/mach-socfpga/headsmp.S b/arch/arm/mach-socfpga/headsmp.S
index 95c115d8b5ee..f65ea0af4af3 100644
--- a/arch/arm/mach-socfpga/headsmp.S
+++ b/arch/arm/mach-socfpga/headsmp.S
@@ -9,21 +9,26 @@
*/
#include <linux/linkage.h>
#include <linux/init.h>
+#include <asm/memory.h>
.arch armv7-a
ENTRY(secondary_trampoline)
- movw r2, #:lower16:cpu1start_addr
- movt r2, #:upper16:cpu1start_addr
-
- /* The socfpga VT cannot handle a 0xC0000000 page offset when loading
- the cpu1start_addr, we bit clear it. Tested on HW and VT. */
- bic r2, r2, #0x40000000
-
- ldr r0, [r2]
- ldr r1, [r0]
- bx r1
+ /* CPU1 will always fetch from 0x0 when it is brought out of reset.
+ * Thus, we can just subtract the PAGE_OFFSET to get the physical
+ * address of &cpu1start_addr. This would not work for platforms
+ * where the physical memory does not start at 0x0.
+ */
+ adr r0, 1f
+ ldmia r0, {r1, r2}
+ sub r2, r2, #PAGE_OFFSET
+ ldr r3, [r2]
+ ldr r4, [r3]
+ bx r4
+ .align
+1: .long .
+ .long socfpga_cpu1start_addr
ENTRY(secondary_trampoline_end)
ENTRY(socfpga_secondary_startup)