From: Victor Kamensky <victor.kamen...@linaro.org>
In order to support booting a big endian kernel the uncompress serial
line write utils need to use endian neutral functions to read h/w
register. Fix uart_rd, uart_wr and serial chip fifo related macros to do
this.
Signed-off-by: Victor Kamensky <victor.kamen...@linaro.org>
Signed-off-by: Mark Brown <broo...@linaro.org>
---
arch/arm/include/debug/samsung.S | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/arch/arm/include/debug/samsung.S b/arch/arm/include/debug/samsung.S
index 8d8d922e5e44..dc62d4ae04d0 100644
--- a/arch/arm/include/debug/samsung.S
+++ b/arch/arm/include/debug/samsung.S
@@ -9,17 +9,20 @@
* published by the Free Software Foundation.
*/
+#include <asm/assembler.h>
#include <linux/serial_s3c.h>
/* The S5PV210/S5PC110 implementations are as belows. */
.macro fifo_level_s5pv210 rd, rx
ldr \rd, [\rx, # S3C2410_UFSTAT]
+ ARM_BE8(rev \rd, \rd)
and \rd, \rd, #S5PV210_UFSTAT_TXMASK
.endm
.macro fifo_full_s5pv210 rd, rx
ldr \rd, [\rx, # S3C2410_UFSTAT]
+ ARM_BE8(rev \rd, \rd)
tst \rd, #S5PV210_UFSTAT_TXFULL
.endm
@@ -28,6 +31,7 @@
.macro fifo_level_s3c2440 rd, rx
ldr \rd, [\rx, # S3C2410_UFSTAT]
+ ARM_BE8(rev \rd, \rd)
and \rd, \rd, #S3C2440_UFSTAT_TXMASK
.endm
@@ -37,6 +41,7 @@
.macro fifo_full_s3c2440 rd, rx
ldr \rd, [\rx, # S3C2410_UFSTAT]
+ ARM_BE8(rev \rd, \rd)
tst \rd, #S3C2440_UFSTAT_TXFULL
.endm
@@ -50,6 +55,7 @@
.macro busyuart, rd, rx
ldr \rd, [\rx, # S3C2410_UFCON]
+ ARM_BE8(rev \rd, \rd)
tst \rd, #S3C2410_UFCON_FIFOMODE @ fifo enabled?
beq 1001f @
@ FIFO enabled...
@@ -61,6 +67,7 @@
1001:
@ busy waiting for non fifo
ldr \rd, [\rx, # S3C2410_UTRSTAT]
+ ARM_BE8(rev \rd, \rd)
tst \rd, #S3C2410_UTRSTAT_TXFE
beq 1001b
@@ -69,6 +76,7 @@
.macro waituart,rd,rx
ldr \rd, [\rx, # S3C2410_UFCON]
+ ARM_BE8(rev \rd, \rd)
tst \rd, #S3C2410_UFCON_FIFOMODE @ fifo enabled?
beq 1001f @
@ FIFO enabled...
@@ -80,6 +88,7 @@
1001:
@ idle waiting for non fifo
ldr \rd, [\rx, # S3C2410_UTRSTAT]
+ ARM_BE8(rev \rd, \rd)
tst \rd, #S3C2410_UTRSTAT_TXFE
beq 1001b
--
2.0.1
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