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 <[email protected]> --- arch/arm/include/debug/zynq.S | 2 ++ arch/arm/mach-zynq/Kconfig | 1 + arch/arm/mach-zynq/headsmp.S | 5 ++++- 3 files changed, 7 insertions(+), 1 deletion(-) diff --git a/arch/arm/include/debug/zynq.S b/arch/arm/include/debug/zynq.S index 0b762fafa758..3895146341f3 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 1daa5c220d1d..ff03a71bb9a3 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: -- 1.8.2.3
pgpYsDjTYnjas.pgp
Description: PGP signature
