summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--arch/arm/boot/compressed/head.S3
-rw-r--r--arch/arm/kernel/head.S18
2 files changed, 11 insertions, 10 deletions
diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S
index e5ab51b..2568d31 100644
--- a/arch/arm/boot/compressed/head.S
+++ b/arch/arm/boot/compressed/head.S
@@ -237,7 +237,8 @@ not_relocated: mov r0, #0
*/
cmp r4, r2
bhs wont_overwrite
- add r0, r4, #4096*1024 @ 4MB largest kernel size
+ sub r3, sp, r5 @ > compressed kernel size
+ add r0, r4, r3, lsl #2 @ allow for 4x expansion
cmp r0, r5
bls wont_overwrite
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index 5365d4e..ebc3e74 100644
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -234,18 +234,18 @@ __create_page_tables:
/*
* Now setup the pagetables for our kernel direct
- * mapped region. We round TEXTADDR down to the
- * nearest megabyte boundary. It is assumed that
- * the kernel fits within 4 contigous 1MB sections.
+ * mapped region.
*/
add r0, r4, #(TEXTADDR & 0xff000000) >> 18 @ start of kernel
str r3, [r0, #(TEXTADDR & 0x00f00000) >> 18]!
- add r3, r3, #1 << 20
- str r3, [r0, #4]! @ KERNEL + 1MB
- add r3, r3, #1 << 20
- str r3, [r0, #4]! @ KERNEL + 2MB
- add r3, r3, #1 << 20
- str r3, [r0, #4] @ KERNEL + 3MB
+
+ ldr r6, =(_end - PAGE_OFFSET - 1) @ r6 = number of sections
+ mov r6, r6, lsr #20 @ needed for kernel minus 1
+
+1: add r3, r3, #1 << 20
+ str r3, [r0, #4]!
+ subs r6, r6, #1
+ bgt 1b
/*
* Then map first 1MB of ram in case it contains our boot params.
OpenPOWER on IntegriCloud