diff options
Diffstat (limited to 'arch/powerpc/boot')
| -rw-r--r-- | arch/powerpc/boot/Makefile | 10 | ||||
| -rw-r--r-- | arch/powerpc/boot/simpleboot.c | 84 | ||||
| -rw-r--r-- | arch/powerpc/boot/virtex405-head.S | 30 | ||||
| -rwxr-xr-x | arch/powerpc/boot/wrapper | 4 |
4 files changed, 127 insertions, 1 deletions
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile index a31d4e12b910..7dcd9e953a98 100644 --- a/arch/powerpc/boot/Makefile +++ b/arch/powerpc/boot/Makefile @@ -40,6 +40,7 @@ $(obj)/ebony.o: BOOTCFLAGS += -mcpu=405 $(obj)/cuboot-taishan.o: BOOTCFLAGS += -mcpu=405 $(obj)/cuboot-katmai.o: BOOTCFLAGS += -mcpu=405 $(obj)/treeboot-walnut.o: BOOTCFLAGS += -mcpu=405 +$(obj)/virtex405-head.o: BOOTCFLAGS += -mcpu=405 zlib := inffast.c inflate.c inftrees.c @@ -64,7 +65,8 @@ src-plat := of.c cuboot-52xx.c cuboot-824x.c cuboot-83xx.c cuboot-85xx.c holly.c cuboot-bamboo.c cuboot-mpc7448hpc2.c cuboot-taishan.c \ fixed-head.S ep88xc.c ep405.c \ cuboot-katmai.c cuboot-rainier.c redboot-8xx.c ep8248e.c \ - cuboot-warp.c cuboot-85xx-cpm2.c cuboot-yosemite.c + cuboot-warp.c cuboot-85xx-cpm2.c cuboot-yosemite.c simpleboot.c \ + virtex405-head.S src-boot := $(src-wlib) $(src-plat) empty.c src-boot := $(addprefix $(obj)/, $(src-boot)) @@ -307,6 +309,12 @@ $(obj)/uImage: vmlinux $(wrapperbits) $(obj)/cuImage.%: vmlinux $(obj)/%.dtb $(wrapperbits) $(call if_changed,wrap,cuboot-$*,,$(obj)/$*.dtb) +$(obj)/simpleImage.initrd.%: vmlinux $(obj)/%.dtb $(wrapperbits) + $(call if_changed,wrap,simpleboot-$*,,$(obj)/$*.dtb,$(obj)/ramdisk.image.gz) + +$(obj)/simpleImage.%: vmlinux $(obj)/%.dtb $(wrapperbits) + $(call if_changed,wrap,simpleboot-$*,,$(obj)/$*.dtb) + $(obj)/treeImage.initrd.%: vmlinux $(obj)/%.dtb $(wrapperbits) $(call if_changed,wrap,treeboot-$*,,$(obj)/$*.dtb,$(obj)/ramdisk.image.gz) diff --git a/arch/powerpc/boot/simpleboot.c b/arch/powerpc/boot/simpleboot.c new file mode 100644 index 000000000000..86cd285bccc6 --- /dev/null +++ b/arch/powerpc/boot/simpleboot.c @@ -0,0 +1,84 @@ +/* + * The simple platform -- for booting when firmware doesn't supply a device + * tree or any platform configuration information. + * All data is extracted from an embedded device tree + * blob. + * + * Authors: Scott Wood <scottwood@freescale.com> + * Grant Likely <grant.likely@secretlab.ca> + * + * Copyright (c) 2007 Freescale Semiconductor, Inc. + * Copyright (c) 2008 Secret Lab Technologies Ltd. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include "ops.h" +#include "types.h" +#include "io.h" +#include "stdio.h" +#include "libfdt/libfdt.h" + +BSS_STACK(4*1024); + +void platform_init(unsigned long r3, unsigned long r4, unsigned long r5, + unsigned long r6, unsigned long r7) +{ + const u32 *na, *ns, *reg, *timebase; + u64 memsize64; + int node, size, i; + + /* Make sure FDT blob is sane */ + if (fdt_check_header(_dtb_start) != 0) + fatal("Invalid device tree blob\n"); + + /* Find the #address-cells and #size-cells properties */ + node = fdt_path_offset(_dtb_start, "/"); + if (node < 0) + fatal("Cannot find root node\n"); + na = fdt_getprop(_dtb_start, node, "#address-cells", &size); + if (!na || (size != 4)) + fatal("Cannot find #address-cells property"); + ns = fdt_getprop(_dtb_start, node, "#size-cells", &size); + if (!ns || (size != 4)) + fatal("Cannot find #size-cells property"); + + /* Find the memory range */ + node = fdt_node_offset_by_prop_value(_dtb_start, -1, "device_type", + "memory", sizeof("memory")); + if (node < 0) + fatal("Cannot find memory node\n"); + reg = fdt_getprop(_dtb_start, node, "reg", &size); + if (size < (*na+*ns) * sizeof(u32)) + fatal("cannot get memory range\n"); + + /* Only interested in memory based at 0 */ + for (i = 0; i < *na; i++) + if (*reg++ != 0) + fatal("Memory range is not based at address 0\n"); + + /* get the memsize and trucate it to under 4G on 32 bit machines */ + memsize64 = 0; + for (i = 0; i < *ns; i++) + memsize64 = (memsize64 << 32) | *reg++; + if (sizeof(void *) == 4 && memsize64 >= 0x100000000ULL) + memsize64 = 0xffffffff; + + /* finally, setup the timebase */ + node = fdt_node_offset_by_prop_value(_dtb_start, -1, "device_type", + "cpu", sizeof("cpu")); + if (!node) + fatal("Cannot find cpu node\n"); + timebase = fdt_getprop(_dtb_start, node, "timebase-frequency", &size); + if (timebase && (size == 4)) + timebase_period_ns = 1000000000 / *timebase; + + /* Now we have the memory size; initialize the heap */ + simple_alloc_init(_end, memsize64 - (unsigned long)_end, 32, 64); + + /* prepare the device tree and find the console */ + fdt_init(_dtb_start); + serial_console_init(); +} diff --git a/arch/powerpc/boot/virtex405-head.S b/arch/powerpc/boot/virtex405-head.S new file mode 100644 index 000000000000..3edb13f94669 --- /dev/null +++ b/arch/powerpc/boot/virtex405-head.S @@ -0,0 +1,30 @@ +#include "ppc_asm.h" + + .text + .global _zimage_start +_zimage_start: + + /* PPC errata 213: needed by Virtex-4 FX */ + mfccr0 0 + oris 0,0,0x50000000@h + mtccr0 0 + + /* + * Invalidate the data cache if the data cache is turned off. + * - The 405 core does not invalidate the data cache on power-up + * or reset but does turn off the data cache. We cannot assume + * that the cache contents are valid. + * - If the data cache is turned on this must have been done by + * a bootloader and we assume that the cache contents are + * valid. + */ + mfdccr r9 + cmplwi r9,0 + bne 2f + lis r9,0 + li r8,256 + mtctr r8 +1: dccci r0,r9 + addi r9,r9,0x20 + bdnz 1b +2: b _zimage_start_lib diff --git a/arch/powerpc/boot/wrapper b/arch/powerpc/boot/wrapper index 087e120e4904..14a01823ba53 100755 --- a/arch/powerpc/boot/wrapper +++ b/arch/powerpc/boot/wrapper @@ -199,6 +199,10 @@ adder875-redboot) platformo="$object/fixed-head.o $object/redboot-8xx.o" binary=y ;; +simpleboot-virtex405-*) + platformo="$object/virtex405-head.o $object/simpleboot.o" + binary=y + ;; esac vmz="$tmpdir/`basename \"$kernel\"`.$ext" |