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authorLinus Torvalds <torvalds@linux-foundation.org>2010-06-04 15:42:09 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-06-04 15:42:09 -0700
commit999fd1ab344dabd9c985b638bf4c29495b8e4619 (patch)
treeb4a238aafc79caa085e469ee28ab61301ca17f8f /arch/sh/boot
parent9a9620db07b27700a4de9e86985735fffb78e2f8 (diff)
parentac422f9443191e050c16fe99baeb5c3d74934589 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (23 commits) sh: Make intc messages consistent via pr_fmt. sh: make sure static declaration on ms7724se sh: make sure static declaration on mach-migor sh: make sure static declaration on mach-ecovec24 sh: make sure static declaration on mach-ap325rxa clocksource: sh_cmt: compute mult and shift before registration clocksource: sh_tmu: compute mult and shift before registration sh: PIO disabling for x3proto and urquell. sh: mach-sdk7786: conditionally disable PIO support. sh: support for platforms without PIO. usb: r8a66597-hcd pio to mmio accessor conversion. usb: gadget: r8a66597-udc pio to mmio accessor conversion. usb: gadget: m66592-udc pio to mmio accessor conversion. sh: add romImage MMCIF boot for sh7724 and Ecovec V2 sh: add boot code to MMCIF driver header sh: prepare MMCIF driver header file sh: allow romImage data between head.S and the zero page sh: Add support MMCIF for ecovec sh: remove duplicated #include input: serio: disable i8042 for non-cayman sh platforms. ...
Diffstat (limited to 'arch/sh/boot')
-rw-r--r--arch/sh/boot/romimage/Makefile13
-rw-r--r--arch/sh/boot/romimage/head.S42
-rw-r--r--arch/sh/boot/romimage/mmcif-sh7724.c72
-rw-r--r--arch/sh/boot/romimage/vmlinux.scr2
4 files changed, 122 insertions, 7 deletions
diff --git a/arch/sh/boot/romimage/Makefile b/arch/sh/boot/romimage/Makefile
index f473a24a2d9..2216ee57f25 100644
--- a/arch/sh/boot/romimage/Makefile
+++ b/arch/sh/boot/romimage/Makefile
@@ -1,16 +1,21 @@
#
# linux/arch/sh/boot/romimage/Makefile
#
-# create an image suitable for burning to flash from zImage
+# create an romImage file suitable for burning to flash/mmc from zImage
#
targets := vmlinux head.o zeropage.bin piggy.o
+load-y := 0
-OBJECTS = $(obj)/head.o
-LDFLAGS_vmlinux := --oformat $(ld-bfd) -Ttext 0 -e romstart \
+mmcif-load-$(CONFIG_CPU_SUBTYPE_SH7724) := 0xe5200000 # ILRAM
+mmcif-obj-$(CONFIG_CPU_SUBTYPE_SH7724) := $(obj)/mmcif-sh7724.o
+load-$(CONFIG_ROMIMAGE_MMCIF) := $(mmcif-load-y)
+obj-$(CONFIG_ROMIMAGE_MMCIF) := $(mmcif-obj-y)
+
+LDFLAGS_vmlinux := --oformat $(ld-bfd) -Ttext $(load-y) -e romstart \
-T $(obj)/../../kernel/vmlinux.lds
-$(obj)/vmlinux: $(OBJECTS) $(obj)/piggy.o FORCE
+$(obj)/vmlinux: $(obj)/head.o $(obj-y) $(obj)/piggy.o FORCE
$(call if_changed,ld)
@:
diff --git a/arch/sh/boot/romimage/head.S b/arch/sh/boot/romimage/head.S
index 93e779a405e..4671d1b8215 100644
--- a/arch/sh/boot/romimage/head.S
+++ b/arch/sh/boot/romimage/head.S
@@ -12,8 +12,40 @@ romstart:
/* include board specific setup code */
#include <mach/romimage.h>
+#ifdef CONFIG_ROMIMAGE_MMCIF
+ /* load the romImage to above the empty zero page */
+ mov.l empty_zero_page_dst, r4
+ mov.l empty_zero_page_dst_adj, r5
+ add r5, r4
+ mov.l bytes_to_load, r5
+ mov.l loader_function, r7
+ jsr @r7
+ mov r4, r15
+
+ mov.l empty_zero_page_dst, r4
+ mov.l empty_zero_page_dst_adj, r5
+ add r5, r4
+ mov.l loaded_code_offs, r5
+ add r5, r4
+ jmp @r4
+ nop
+
+ .balign 4
+empty_zero_page_dst_adj:
+ .long PAGE_SIZE
+bytes_to_load:
+ .long end_data - romstart
+loader_function:
+ .long mmcif_loader
+loaded_code_offs:
+ .long loaded_code - romstart
+loaded_code:
+#endif /* CONFIG_ROMIMAGE_MMCIF */
+
/* copy the empty_zero_page contents to where vmlinux expects it */
- mova empty_zero_page_src, r0
+ mova extra_data_pos, r0
+ mov.l extra_data_size, r1
+ add r1, r0
mov.l empty_zero_page_dst, r1
mov #(PAGE_SHIFT - 4), r4
mov #1, r3
@@ -37,7 +69,9 @@ romstart:
mov #PAGE_SHIFT, r4
mov #1, r1
shld r4, r1
- mova empty_zero_page_src, r0
+ mova extra_data_pos, r0
+ add r1, r0
+ mov.l extra_data_size, r1
add r1, r0
jmp @r0
nop
@@ -45,4 +79,6 @@ romstart:
.align 2
empty_zero_page_dst:
.long _text
-empty_zero_page_src:
+extra_data_pos:
+extra_data_size:
+ .long zero_page_pos - extra_data_pos
diff --git a/arch/sh/boot/romimage/mmcif-sh7724.c b/arch/sh/boot/romimage/mmcif-sh7724.c
new file mode 100644
index 00000000000..14863d7292c
--- /dev/null
+++ b/arch/sh/boot/romimage/mmcif-sh7724.c
@@ -0,0 +1,72 @@
+/*
+ * sh7724 MMCIF loader
+ *
+ * Copyright (C) 2010 Magnus Damm
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/mmc/sh_mmcif.h>
+#include <mach/romimage.h>
+
+#define MMCIF_BASE (void __iomem *)0xa4ca0000
+
+#define MSTPCR2 0xa4150038
+#define PTWCR 0xa4050146
+#define PTXCR 0xa4050148
+#define PSELA 0xa405014e
+#define PSELE 0xa4050156
+#define HIZCRC 0xa405015c
+#define DRVCRA 0xa405018a
+
+enum { MMCIF_PROGRESS_ENTER, MMCIF_PROGRESS_INIT,
+ MMCIF_PROGRESS_LOAD, MMCIF_PROGRESS_DONE };
+
+/* SH7724 specific MMCIF loader
+ *
+ * loads the romImage from an MMC card starting from block 512
+ * use the following line to write the romImage to an MMC card
+ * # dd if=arch/sh/boot/romImage of=/dev/sdx bs=512 seek=512
+ */
+asmlinkage void mmcif_loader(unsigned char *buf, unsigned long no_bytes)
+{
+ mmcif_update_progress(MMCIF_PROGRESS_ENTER);
+
+ /* enable clock to the MMCIF hardware block */
+ __raw_writel(__raw_readl(MSTPCR2) & ~0x20000000, MSTPCR2);
+
+ /* setup pins D7-D0 */
+ __raw_writew(0x0000, PTWCR);
+
+ /* setup pins MMC_CLK, MMC_CMD */
+ __raw_writew(__raw_readw(PTXCR) & ~0x000f, PTXCR);
+
+ /* select D3-D0 pin function */
+ __raw_writew(__raw_readw(PSELA) & ~0x2000, PSELA);
+
+ /* select D7-D4 pin function */
+ __raw_writew(__raw_readw(PSELE) & ~0x3000, PSELE);
+
+ /* disable Hi-Z for the MMC pins */
+ __raw_writew(__raw_readw(HIZCRC) & ~0x0620, HIZCRC);
+
+ /* high drive capability for MMC pins */
+ __raw_writew(__raw_readw(DRVCRA) | 0x3000, DRVCRA);
+
+ mmcif_update_progress(MMCIF_PROGRESS_INIT);
+
+ /* setup MMCIF hardware */
+ sh_mmcif_boot_init(MMCIF_BASE);
+
+ mmcif_update_progress(MMCIF_PROGRESS_LOAD);
+
+ /* load kernel via MMCIF interface */
+ sh_mmcif_boot_slurp(MMCIF_BASE, buf, no_bytes);
+
+ /* disable clock to the MMCIF hardware block */
+ __raw_writel(__raw_readl(MSTPCR2) | 0x20000000, MSTPCR2);
+
+ mmcif_update_progress(MMCIF_PROGRESS_DONE);
+}
diff --git a/arch/sh/boot/romimage/vmlinux.scr b/arch/sh/boot/romimage/vmlinux.scr
index 287c08f8b4b..590394e2f5f 100644
--- a/arch/sh/boot/romimage/vmlinux.scr
+++ b/arch/sh/boot/romimage/vmlinux.scr
@@ -1,6 +1,8 @@
SECTIONS
{
.text : {
+ zero_page_pos = .;
*(.data)
+ end_data = .;
}
}