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| author | Michal Simek <michal.simek@xilinx.com> | 2014-04-11 17:05:56 +0400 |
|---|---|---|
| committer | Michal Simek <michal.simek@xilinx.com> | 2014-05-20 18:17:13 +0400 |
| commit | eb28d0bb857f01ff972f8b359c962eef9ecf1b64 (patch) | |
| tree | 89e5d5417a11dd5427283ac57e2bca3b7a10023b /arch | |
| parent | 90a6695a2ac1b9db8e0f4bfec3156c22a722d9ba (diff) | |
| download | linux-eb28d0bb857f01ff972f8b359c962eef9ecf1b64.tar.xz | |
ARM: zynq: Enable big-endian
Enable ARCH_SUPPORTS_BIG_ENDIAN in Kconfig.
zynq_secondary_trampoline is the first function
that is called on secondary CPU.
Reference:
"ARM: mcpm: fix big endian issue in mcpm startup code"
(sha1: 519ceb9fd10cd7e836d0aa97b2068cc9e97f463b)
Fix early printk support. Based on:
"ARM: pl01x debug code endian fix"
(sha1: 76e3faf156fa95b6465e747d702b94faf67117fc)
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/include/debug/zynq.S | 2 | ||||
| -rw-r--r-- | arch/arm/mach-zynq/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm/mach-zynq/headsmp.S | 5 |
3 files changed, 7 insertions, 1 deletions
diff --git a/arch/arm/include/debug/zynq.S b/arch/arm/include/debug/zynq.S index 3edfef7b34ae..bd13dedbdeff 100644 --- a/arch/arm/include/debug/zynq.S +++ b/arch/arm/include/debug/zynq.S @@ -43,12 +43,14 @@ .macro waituart,rd,rx 1001: ldr \rd, [\rx, #UART_SR_OFFSET] +ARM_BE8( rev \rd, \rd ) tst \rd, #UART_SR_TXEMPTY beq 1001b .endm .macro busyuart,rd,rx 1002: ldr \rd, [\rx, #UART_SR_OFFSET] @ get status register +ARM_BE8( rev \rd, \rd ) tst \rd, #UART_SR_TXFULL @ bne 1002b @ wait if FIFO is full .endm diff --git a/arch/arm/mach-zynq/Kconfig b/arch/arm/mach-zynq/Kconfig index afbb0b64b17b..573e0db1d0f0 100644 --- a/arch/arm/mach-zynq/Kconfig +++ b/arch/arm/mach-zynq/Kconfig @@ -2,6 +2,7 @@ config ARCH_ZYNQ bool "Xilinx Zynq ARM Cortex A9 Platform" if ARCH_MULTI_V7 select ARCH_HAS_CPUFREQ select ARCH_HAS_OPP + select ARCH_SUPPORTS_BIG_ENDIAN select ARM_AMBA select ARM_GIC select ARM_GLOBAL_TIMER if !CPU_FREQ diff --git a/arch/arm/mach-zynq/headsmp.S b/arch/arm/mach-zynq/headsmp.S index 57a32869f0aa..dd8c071941e7 100644 --- a/arch/arm/mach-zynq/headsmp.S +++ b/arch/arm/mach-zynq/headsmp.S @@ -8,9 +8,12 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <asm/assembler.h> ENTRY(zynq_secondary_trampoline) - ldr r0, [pc] +ARM_BE8(setend be) @ ensure we are in BE8 mode + ldr r0, zynq_secondary_trampoline_jump +ARM_BE8(rev r0, r0) bx r0 .globl zynq_secondary_trampoline_jump zynq_secondary_trampoline_jump: |