diff options
| author | Johannes Berg <johannes@sipsolutions.net> | 2016-01-27 17:59:36 +0100 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2016-02-02 06:31:19 +0100 |
| commit | 26e30c6489f4774492c168c7b953e575a16765f7 (patch) | |
| tree | 7d90e155b70e0c3eb1a3269a20d12acb0151071a /arch/arm/include/debug | |
| parent | ARM: imx: use endian-safe readl/readw/writel/writew (diff) | |
| download | linux-26e30c6489f4774492c168c7b953e575a16765f7.tar.xz linux-26e30c6489f4774492c168c7b953e575a16765f7.zip | |
ARM: imx: enable big endian mode
Enable ARM big-endian mode on mach-imx. This requires adding some
byte swapping in the debug functions (which otherwise hang forever)
and of course the secondary core bringup.
Tested (on top of 4.4) on i.MX6 HummingBoard quad-core (IMX6Q).
The patch is pretty much as suggested by Arnd Bergmann, thanks!
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'arch/arm/include/debug')
| -rw-r--r-- | arch/arm/include/debug/imx.S | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/include/debug/imx.S b/arch/arm/include/debug/imx.S index 619d8cc1ac12..92c44760d656 100644 --- a/arch/arm/include/debug/imx.S +++ b/arch/arm/include/debug/imx.S @@ -11,6 +11,7 @@ * */ +#include <asm/assembler.h> #include "imx-uart.h" /* @@ -34,6 +35,7 @@ .endm .macro senduart,rd,rx + ARM_BE8(rev \rd, \rd) str \rd, [\rx, #0x40] @ TXDATA .endm @@ -42,6 +44,7 @@ .macro busyuart,rd,rx 1002: ldr \rd, [\rx, #0x98] @ SR2 + ARM_BE8(rev \rd, \rd) tst \rd, #1 << 3 @ TXDC beq 1002b @ wait until transmit done .endm |