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-rw-r--r--arch/ppc/Makefile11
-rw-r--r--arch/ppc/boot/utils/addRamDisk.c203
-rw-r--r--arch/ppc/kernel/cpu_setup_6xx.S5
-rw-r--r--arch/ppc/kernel/l2cr.S31
-rw-r--r--arch/ppc/syslib/m8xx_setup.c6
5 files changed, 47 insertions, 209 deletions
diff --git a/arch/ppc/Makefile b/arch/ppc/Makefile
index f9b0d778dd8..d1b6e6dcb50 100644
--- a/arch/ppc/Makefile
+++ b/arch/ppc/Makefile
@@ -21,11 +21,13 @@ CC := $(CC) -m32
endif
LDFLAGS_vmlinux := -Ttext $(KERNELLOAD) -Bstatic
-CPPFLAGS += -Iarch/$(ARCH)
+CPPFLAGS += -Iarch/$(ARCH) -Iinclude3
AFLAGS += -Iarch/$(ARCH)
CFLAGS += -Iarch/$(ARCH) -msoft-float -pipe \
-ffixed-r2 -mmultiple
CPP = $(CC) -E $(CFLAGS)
+# Temporary hack until we have migrated to asm-powerpc
+LINUXINCLUDE += -Iinclude3
CHECKFLAGS += -D__powerpc__
@@ -101,6 +103,7 @@ endef
archclean:
$(Q)$(MAKE) $(clean)=arch/ppc/boot
+ $(Q)rm -rf include3
prepare: include/asm-$(ARCH)/offsets.h checkbin
@@ -110,6 +113,12 @@ arch/$(ARCH)/kernel/asm-offsets.s: include/asm include/linux/version.h \
include/asm-$(ARCH)/offsets.h: arch/$(ARCH)/kernel/asm-offsets.s
$(call filechk,gen-asm-offsets)
+# Temporary hack until we have migrated to asm-powerpc
+include/asm: include3/asm
+include3/asm:
+ $(Q)if [ ! -d include3 ]; then mkdir -p include3; fi
+ $(Q)ln -fsn $(srctree)/include/asm-powerpc include3/asm
+
# Use the file '.tmp_gas_check' for binutils tests, as gas won't output
# to stdout and these checks are run even on install targets.
TOUT := .tmp_gas_check
diff --git a/arch/ppc/boot/utils/addRamDisk.c b/arch/ppc/boot/utils/addRamDisk.c
deleted file mode 100644
index 93400dfcce7..00000000000
--- a/arch/ppc/boot/utils/addRamDisk.c
+++ /dev/null
@@ -1,203 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <netinet/in.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <string.h>
-
-#define ElfHeaderSize (64 * 1024)
-#define ElfPages (ElfHeaderSize / 4096)
-#define KERNELBASE (0xc0000000)
-
-void get4k(FILE *file, char *buf )
-{
- unsigned j;
- unsigned num = fread(buf, 1, 4096, file);
- for ( j=num; j<4096; ++j )
- buf[j] = 0;
-}
-
-void put4k(FILE *file, char *buf )
-{
- fwrite(buf, 1, 4096, file);
-}
-
-void death(const char *msg, FILE *fdesc, const char *fname)
-{
- printf(msg);
- fclose(fdesc);
- unlink(fname);
- exit(1);
-}
-
-int main(int argc, char **argv)
-{
- char inbuf[4096];
- FILE *ramDisk = NULL;
- FILE *inputVmlinux = NULL;
- FILE *outputVmlinux = NULL;
- unsigned i = 0;
- u_int32_t ramFileLen = 0;
- u_int32_t ramLen = 0;
- u_int32_t roundR = 0;
- u_int32_t kernelLen = 0;
- u_int32_t actualKernelLen = 0;
- u_int32_t round = 0;
- u_int32_t roundedKernelLen = 0;
- u_int32_t ramStartOffs = 0;
- u_int32_t ramPages = 0;
- u_int32_t roundedKernelPages = 0;
- u_int32_t hvReleaseData = 0;
- u_int32_t eyeCatcher = 0xc8a5d9c4;
- u_int32_t naca = 0;
- u_int32_t xRamDisk = 0;
- u_int32_t xRamDiskSize = 0;
- if ( argc < 2 ) {
- printf("Name of RAM disk file missing.\n");
- exit(1);
- }
-
- if ( argc < 3 ) {
- printf("Name of vmlinux file missing.\n");
- exit(1);
- }
-
- if ( argc < 4 ) {
- printf("Name of vmlinux output file missing.\n");
- exit(1);
- }
-
- ramDisk = fopen(argv[1], "r");
- if ( ! ramDisk ) {
- printf("RAM disk file \"%s\" failed to open.\n", argv[1]);
- exit(1);
- }
- inputVmlinux = fopen(argv[2], "r");
- if ( ! inputVmlinux ) {
- printf("vmlinux file \"%s\" failed to open.\n", argv[2]);
- exit(1);
- }
- outputVmlinux = fopen(argv[3], "w+");
- if ( ! outputVmlinux ) {
- printf("output vmlinux file \"%s\" failed to open.\n", argv[3]);
- exit(1);
- }
- fseek(ramDisk, 0, SEEK_END);
- ramFileLen = ftell(ramDisk);
- fseek(ramDisk, 0, SEEK_SET);
- printf("%s file size = %d\n", argv[1], ramFileLen);
-
- ramLen = ramFileLen;
-
- roundR = 4096 - (ramLen % 4096);
- if ( roundR ) {
- printf("Rounding RAM disk file up to a multiple of 4096, adding %d\n", roundR);
- ramLen += roundR;
- }
-
- printf("Rounded RAM disk size is %d\n", ramLen);
- fseek(inputVmlinux, 0, SEEK_END);
- kernelLen = ftell(inputVmlinux);
- fseek(inputVmlinux, 0, SEEK_SET);
- printf("kernel file size = %d\n", kernelLen);
- if ( kernelLen == 0 ) {
- printf("You must have a linux kernel specified as argv[2]\n");
- exit(1);
- }
-
- actualKernelLen = kernelLen - ElfHeaderSize;
-
- printf("actual kernel length (minus ELF header) = %d\n", actualKernelLen);
-
- round = actualKernelLen % 4096;
- roundedKernelLen = actualKernelLen;
- if ( round )
- roundedKernelLen += (4096 - round);
-
- printf("actual kernel length rounded up to a 4k multiple = %d\n", roundedKernelLen);
-
- ramStartOffs = roundedKernelLen;
- ramPages = ramLen / 4096;
-
- printf("RAM disk pages to copy = %d\n", ramPages);
-
- // Copy 64K ELF header
- for (i=0; i<(ElfPages); ++i) {
- get4k( inputVmlinux, inbuf );
- put4k( outputVmlinux, inbuf );
- }
-
- roundedKernelPages = roundedKernelLen / 4096;
-
- fseek(inputVmlinux, ElfHeaderSize, SEEK_SET);
-
- for ( i=0; i<roundedKernelPages; ++i ) {
- get4k( inputVmlinux, inbuf );
- put4k( outputVmlinux, inbuf );
- }
-
- for ( i=0; i<ramPages; ++i ) {
- get4k( ramDisk, inbuf );
- put4k( outputVmlinux, inbuf );
- }
-
- /* Close the input files */
- fclose(ramDisk);
- fclose(inputVmlinux);
- /* And flush the written output file */
- fflush(outputVmlinux);
-
- /* fseek to the hvReleaseData pointer */
- fseek(outputVmlinux, ElfHeaderSize + 0x24, SEEK_SET);
- if (fread(&hvReleaseData, 4, 1, outputVmlinux) != 1) {
- death("Could not read hvReleaseData pointer\n", outputVmlinux, argv[3]);
- }
- hvReleaseData = ntohl(hvReleaseData); /* Convert to native int */
- printf("hvReleaseData is at %08x\n", hvReleaseData);
-
- /* fseek to the hvReleaseData */
- fseek(outputVmlinux, ElfHeaderSize + hvReleaseData, SEEK_SET);
- if (fread(inbuf, 0x40, 1, outputVmlinux) != 1) {
- death("Could not read hvReleaseData\n", outputVmlinux, argv[3]);
- }
- /* Check hvReleaseData sanity */
- if (memcmp(inbuf, &eyeCatcher, 4) != 0) {
- death("hvReleaseData is invalid\n", outputVmlinux, argv[3]);
- }
- /* Get the naca pointer */
- naca = ntohl(*((u_int32_t *) &inbuf[0x0c])) - KERNELBASE;
- printf("naca is at %08x\n", naca);
-
- /* fseek to the naca */
- fseek(outputVmlinux, ElfHeaderSize + naca, SEEK_SET);
- if (fread(inbuf, 0x18, 1, outputVmlinux) != 1) {
- death("Could not read naca\n", outputVmlinux, argv[3]);
- }
- xRamDisk = ntohl(*((u_int32_t *) &inbuf[0x0c]));
- xRamDiskSize = ntohl(*((u_int32_t *) &inbuf[0x14]));
- /* Make sure a RAM disk isn't already present */
- if ((xRamDisk != 0) || (xRamDiskSize != 0)) {
- death("RAM disk is already attached to this kernel\n", outputVmlinux, argv[3]);
- }
- /* Fill in the values */
- *((u_int32_t *) &inbuf[0x0c]) = htonl(ramStartOffs);
- *((u_int32_t *) &inbuf[0x14]) = htonl(ramPages);
-
- /* Write out the new naca */
- fflush(outputVmlinux);
- fseek(outputVmlinux, ElfHeaderSize + naca, SEEK_SET);
- if (fwrite(inbuf, 0x18, 1, outputVmlinux) != 1) {
- death("Could not write naca\n", outputVmlinux, argv[3]);
- }
- printf("RAM Disk of 0x%x pages size is attached to the kernel at offset 0x%08x\n",
- ramPages, ramStartOffs);
-
- /* Done */
- fclose(outputVmlinux);
- /* Set permission to executable */
- chmod(argv[3], S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH);
-
- return 0;
-}
-
diff --git a/arch/ppc/kernel/cpu_setup_6xx.S b/arch/ppc/kernel/cpu_setup_6xx.S
index 468721d9ebd..3fb1fb619d2 100644
--- a/arch/ppc/kernel/cpu_setup_6xx.S
+++ b/arch/ppc/kernel/cpu_setup_6xx.S
@@ -249,8 +249,11 @@ END_FTR_SECTION_IFSET(CPU_FTR_NO_DPM)
sync
isync
- /* Enable L2 HW prefetch
+ /* Enable L2 HW prefetch, if L2 is enabled
*/
+ mfspr r3,SPRN_L2CR
+ andis. r3,r3,L2CR_L2E@h
+ beqlr
mfspr r3,SPRN_MSSCR0
ori r3,r3,3
sync
diff --git a/arch/ppc/kernel/l2cr.S b/arch/ppc/kernel/l2cr.S
index c3944104826..861115249b3 100644
--- a/arch/ppc/kernel/l2cr.S
+++ b/arch/ppc/kernel/l2cr.S
@@ -156,6 +156,26 @@ END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
The bit moved on the 7450.....
****/
+BEGIN_FTR_SECTION
+ /* Disable L2 prefetch on some 745x and try to ensure
+ * L2 prefetch engines are idle. As explained by errata
+ * text, we can't be sure they are, we just hope very hard
+ * that well be enough (sic !). At least I noticed Apple
+ * doesn't even bother doing the dcbf's here...
+ */
+ mfspr r4,SPRN_MSSCR0
+ rlwinm r4,r4,0,0,29
+ sync
+ mtspr SPRN_MSSCR0,r4
+ sync
+ isync
+ lis r4,KERNELBASE@h
+ dcbf 0,r4
+ dcbf 0,r4
+ dcbf 0,r4
+ dcbf 0,r4
+END_FTR_SECTION_IFSET(CPU_FTR_SPEC7450)
+
/* TODO: use HW flush assist when available */
lis r4,0x0002
@@ -230,7 +250,16 @@ END_FTR_SECTION_IFSET(CPU_FTR_SPEC7450)
oris r3,r3,0x8000
mtspr SPRN_L2CR,r3
sync
-
+
+ /* Enable L2 HW prefetch on 744x/745x */
+BEGIN_FTR_SECTION
+ mfspr r3,SPRN_MSSCR0
+ ori r3,r3,3
+ sync
+ mtspr SPRN_MSSCR0,r3
+ sync
+ isync
+END_FTR_SECTION_IFSET(CPU_FTR_SPEC7450)
4:
/* Restore HID0[DPM] to whatever it was before */
diff --git a/arch/ppc/syslib/m8xx_setup.c b/arch/ppc/syslib/m8xx_setup.c
index a3702cfe8f7..4c888da89b3 100644
--- a/arch/ppc/syslib/m8xx_setup.c
+++ b/arch/ppc/syslib/m8xx_setup.c
@@ -57,7 +57,7 @@ unsigned char __res[sizeof(bd_t)];
extern void m8xx_ide_init(void);
extern unsigned long find_available_memory(void);
-extern void m8xx_cpm_reset();
+extern void m8xx_cpm_reset(void);
extern void m8xx_wdt_handler_install(bd_t *bp);
extern void rpxfb_alloc_pages(void);
extern void cpm_interrupt_init(void);
@@ -266,8 +266,8 @@ m8xx_show_percpuinfo(struct seq_file *m, int i)
bp = (bd_t *)__res;
- seq_printf(m, "clock\t\t: %ldMHz\n"
- "bus clock\t: %ldMHz\n",
+ seq_printf(m, "clock\t\t: %uMHz\n"
+ "bus clock\t: %uMHz\n",
bp->bi_intfreq / 1000000,
bp->bi_busfreq / 1000000);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-16 04:48:58 +0000