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ARM: zImage: fix comments for cache_on, cache_off and cache_clean_flush

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This adds missing registers to the list of corrupted registers and
removes a wrong comment about r9 on entry

While at it the formatting of the comment to cache_off is changed to
resemble the other two.

Acked-by: Eric Miao <eric.miao@canonical.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
This commit is contained in:
Uwe Kleine-König
2010-01-26 22:08:09 +01:00
parent 63fa71872b
commit 21b2841df1
1 changed files with 6 additions and 5 deletions
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11
arch/arm/boot/compressed/head.S
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@@ -339,9 +339,8 @@ params: ldr r0, =params_phys
* r4 = kernel execution address * r4 = kernel execution address
* r7 = architecture number * r7 = architecture number
* r8 = atags pointer * r8 = atags pointer
* r9 = run-time address of "start" (???)
* On exit, * On exit,
* r1, r2, r3, r9, r10, r12 corrupted * r0, r1, r2, r3, r9, r10, r12 corrupted
* This routine must preserve: * This routine must preserve:
* r4, r5, r6, r7, r8 * r4, r5, r6, r7, r8
*/ */
@@ -777,8 +776,10 @@ proc_types:
* Turn off the Cache and MMU. ARMv3 does not support * Turn off the Cache and MMU. ARMv3 does not support
* reading the control register, but ARMv4 does. * reading the control register, but ARMv4 does.
* *
* On exit, r0, r1, r2, r3, r9, r12 corrupted * On exit,
* This routine must preserve: r4, r6, r7 * r0, r1, r2, r3, r9, r12 corrupted
* This routine must preserve:
* r4, r6, r7
*/ */
.align 5 .align 5
cache_off: mov r3, #12 @ cache_off function cache_off: mov r3, #12 @ cache_off function
@@ -851,7 +852,7 @@ __armv3_mmu_cache_off:
* Clean and flush the cache to maintain consistency. * Clean and flush the cache to maintain consistency.
* *
* On exit, * On exit,
* r1, r2, r3, r9, r11, r12 corrupted * r1, r2, r3, r9, r10, r11, r12 corrupted
* This routine must preserve: * This routine must preserve:
* r0, r4, r5, r6, r7 * r0, r4, r5, r6, r7
*/ */