diff options
| author | Jean-Christop PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2009-02-25 04:20:40 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-02-27 21:57:46 +0100 |
| commit | c633c3cfcf41efe720020553aa3d4782fa0b9bd5 (patch) | |
| tree | b7de4fc54682dcbf1c89ca8374a55ce3851be685 /arch/arm/boot | |
| parent | Merge branch 'dma' into devel (diff) | |
| download | linux-c633c3cfcf41efe720020553aa3d4782fa0b9bd5.tar.xz linux-c633c3cfcf41efe720020553aa3d4782fa0b9bd5.zip | |
[ARM] 5412/1: XSCALE: add ice dcc support
SCALE: add ice dcc support
Tested on the ixp425 with the ice PEEDI
Ack-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/boot')
| -rw-r--r-- | arch/arm/boot/compressed/head.S | 6 | ||||
| -rw-r--r-- | arch/arm/boot/compressed/misc.c | 15 |
2 files changed, 21 insertions, 0 deletions
diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S index 77d614232d81..d1b678dc120b 100644 --- a/arch/arm/boot/compressed/head.S +++ b/arch/arm/boot/compressed/head.S @@ -27,6 +27,12 @@ .macro writeb, ch, rb mcr p14, 0, \ch, c0, c5, 0 .endm +#elif defined(CONFIG_CPU_XSCALE) + .macro loadsp, rb + .endm + .macro writeb, ch, rb + mcr p14, 0, \ch, c8, c0, 0 + .endm #else .macro loadsp, rb .endm diff --git a/arch/arm/boot/compressed/misc.c b/arch/arm/boot/compressed/misc.c index 3fc08413fff0..393c81641314 100644 --- a/arch/arm/boot/compressed/misc.c +++ b/arch/arm/boot/compressed/misc.c @@ -46,6 +46,21 @@ static void icedcc_putc(int ch) asm("mcr p14, 0, %0, c0, c5, 0" : : "r" (ch)); } +#elif defined(CONFIG_CPU_XSCALE) + +static void icedcc_putc(int ch) +{ + int status, i = 0x4000000; + + do { + if (--i < 0) + return; + + asm volatile ("mrc p14, 0, %0, c14, c0, 0" : "=r" (status)); + } while (status & (1 << 28)); + + asm("mcr p14, 0, %0, c8, c0, 0" : : "r" (ch)); +} #else |