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| author | Ben Dooks <ben.dooks@codethink.co.uk> | 2013-02-06 19:25:36 +0100 |
|---|---|---|
| committer | Ben Dooks <ben.dooks@codethink.co.uk> | 2013-10-19 21:46:33 +0200 |
| commit | 76e3faf156fa95b6465e747d702b94faf67117fc (patch) | |
| tree | f49451bd0eba176be3fa8ffc7c20e7fb6fc6b63c | |
| parent | ARM: set BE8 if LE in head code (diff) | |
| download | linux-76e3faf156fa95b6465e747d702b94faf67117fc.tar.xz linux-76e3faf156fa95b6465e747d702b94faf67117fc.zip | |
ARM: pl01x debug code endian fix
The PL01X debug code needs to take into account which endian mode the
processor is running in. If it is big-endian, ensure the data is swapped
appropriately.
Note, we could do this slightly more efficiently if we have an macro to
do the necessary swap for the bits used by test.
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
| -rw-r--r-- | arch/arm/include/debug/pl01x.S | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/include/debug/pl01x.S b/arch/arm/include/debug/pl01x.S index 37c6895b87e6..92ef808a2337 100644 --- a/arch/arm/include/debug/pl01x.S +++ b/arch/arm/include/debug/pl01x.S @@ -25,12 +25,14 @@ .macro waituart,rd,rx 1001: ldr \rd, [\rx, #UART01x_FR] + ARM_BE8( rev \rd, \rd ) tst \rd, #UART01x_FR_TXFF bne 1001b .endm .macro busyuart,rd,rx 1001: ldr \rd, [\rx, #UART01x_FR] + ARM_BE8( rev \rd, \rd ) tst \rd, #UART01x_FR_BUSY bne 1001b .endm |