diff options
Diffstat (limited to 'target/linux/bcm53xx/patches-4.4/300-ARM-BCM5301X-Disable-MMU-and-Dcache-for-decompression.patch')
| -rw-r--r-- | target/linux/bcm53xx/patches-4.4/300-ARM-BCM5301X-Disable-MMU-and-Dcache-for-decompression.patch | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/target/linux/bcm53xx/patches-4.4/300-ARM-BCM5301X-Disable-MMU-and-Dcache-for-decompression.patch b/target/linux/bcm53xx/patches-4.4/300-ARM-BCM5301X-Disable-MMU-and-Dcache-for-decompression.patch deleted file mode 100644 index 62bda2e830..0000000000 --- a/target/linux/bcm53xx/patches-4.4/300-ARM-BCM5301X-Disable-MMU-and-Dcache-for-decompression.patch +++ /dev/null @@ -1,86 +0,0 @@ -From: Florian Fainelli <f.fainelli@gmail.com> -Subject: [PATCH] ARM: BCM5301x: Disable MMU and Dcache during decompression -Date: Tue, 14 Jul 2015 16:12:08 -0700 - -Use the existing __armv7_mmu_cache_flush() to perform the cache flush -since this does what we are after. - -Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> ---- - arch/arm/boot/compressed/Makefile | 4 +++ - arch/arm/boot/compressed/head-bcm_5301x-mpcore.S | 37 ++++++++++++++++++++++++ - arch/arm/boot/compressed/head.S | 2 ++ - 3 files changed, 43 insertions(+) - create mode 100644 arch/arm/boot/compressed/head-bcm_5301x-mpcore.S - ---- a/arch/arm/boot/compressed/Makefile -+++ b/arch/arm/boot/compressed/Makefile -@@ -31,6 +31,10 @@ ifeq ($(CONFIG_ARCH_ACORN),y) - OBJS += ll_char_wr.o font.o - endif - -+ifeq ($(CONFIG_ARCH_BCM_5301X),y) -+OBJS += head-bcm_5301x-mpcore.o -+endif -+ - ifeq ($(CONFIG_ARCH_SA1100),y) - OBJS += head-sa1100.o - endif ---- /dev/null -+++ b/arch/arm/boot/compressed/head-bcm_5301x-mpcore.S -@@ -0,0 +1,37 @@ -+/* -+ * -+ * Platform specific tweaks. This is merged into head.S by the linker. -+ * -+ */ -+ -+#include <linux/linkage.h> -+#include <asm/assembler.h> -+#include <asm/cp15.h> -+ -+ .section ".start", "ax" -+ -+/* -+ * This code section is spliced into the head code by the linker -+ */ -+ -+__plat_uncompress_start: -+ -+ @ Preserve r8/r7 i.e. kernel entry values -+ mov r12, r8 -+ -+ @ Clear MMU enable and Dcache enable bits -+ mrc p15, 0, r0, c1, c0, 0 @ Read SCTLR -+ bic r0, #CR_C|CR_M -+ mcr p15, 0, r0, c1, c0, 0 @ Write SCTLR -+ nop -+ -+ @ Call the cache invalidation routine -+ bl __armv7_mmu_cache_flush_fn -+ nop -+ mov r0,#0 -+ ldr r3, =0x19022000 @ L2 cache controller, control reg -+ str r0, [r3, #0x100] @ Disable L2 cache -+ nop -+ -+ @ Restore -+ mov r8, r12 ---- a/arch/arm/boot/compressed/head.S -+++ b/arch/arm/boot/compressed/head.S -@@ -1152,6 +1152,7 @@ __armv7_mmu_cache_flush: - hierarchical: - mcr p15, 0, r10, c7, c10, 5 @ DMB - stmfd sp!, {r0-r7, r9-r11} -+ENTRY(__armv7_mmu_cache_flush_fn) - mrc p15, 1, r0, c0, c0, 1 @ read clidr - ands r3, r0, #0x7000000 @ extract loc from clidr - mov r3, r3, lsr #23 @ left align loc bit field -@@ -1201,6 +1202,7 @@ iflush: - mcr p15, 0, r10, c7, c10, 4 @ DSB - mcr p15, 0, r10, c7, c5, 4 @ ISB - mov pc, lr -+ENDPROC(__armv7_mmu_cache_flush_fn) - - __armv5tej_mmu_cache_flush: - tst r4, #1 |