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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2005-07-01 11:56:55 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2005-07-01 11:56:55 +0100 |
| commit | c77b042700ae1fc4d661d7d62787899e755160d5 (patch) | |
| tree | faa9b2abe3b3c73150fc7b9feaa552ba04220b90 /arch/arm | |
| parent | e695f60454f665604fe1b6e473f25b098203965a (diff) | |
| download | op-kernel-dev-c77b042700ae1fc4d661d7d62787899e755160d5.zip op-kernel-dev-c77b042700ae1fc4d661d7d62787899e755160d5.tar.gz | |
[PATCH] ARM: Make the magic values in head.S more obvious
Make the magic address values in head.S more obvious as to where
they came from. Wrap all debug code in CONFIG_DEBUG_LL.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/kernel/head.S | 20 |
1 files changed, 8 insertions, 12 deletions
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S index bd4823c..1155cf0 100644 --- a/arch/arm/kernel/head.S +++ b/arch/arm/kernel/head.S @@ -344,9 +344,9 @@ __create_page_tables: str r6, [r0] #endif +#ifdef CONFIG_DEBUG_LL bic r7, r7, #0x0c @ turn off cacheable @ and bufferable bits -#ifdef CONFIG_DEBUG_LL /* * Map in IO space for serial debugging. * This allows debug messages to be output @@ -372,28 +372,24 @@ __create_page_tables: teq r1, #MACH_TYPE_NETWINDER teqne r1, #MACH_TYPE_CATS bne 1f - add r0, r4, #0x3fc0 @ ff000000 - mov r3, #0x7c000000 - orr r3, r3, r7 - str r3, [r0], #4 - add r3, r3, #1 << 20 - str r3, [r0], #4 + add r0, r4, #0xff000000 >> 18 + orr r3, r7, #0x7c000000 + str r3, [r0] 1: #endif -#endif #ifdef CONFIG_ARCH_RPC /* * Map in screen at 0x02000000 & SCREEN2_BASE * Similar reasons here - for debug. This is * only for Acorn RiscPC architectures. */ - add r0, r4, #0x80 @ 02000000 - mov r3, #0x02000000 - orr r3, r3, r7 + add r0, r4, #0x02000000 >> 18 + orr r3, r7, #0x02000000 str r3, [r0] - add r0, r4, #0x3600 @ d8000000 + add r0, r4, #0xd8000000 >> 18 str r3, [r0] #endif +#endif mov pc, lr .ltorg |
