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>

1 files changed, 2 insertions, 0 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