summaryrefslogtreecommitdiff
path: root/arch/arm/lib
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/lib')
-rw-r--r--arch/arm/lib/Makefile2
-rw-r--r--arch/arm/lib/bootm-fdt.c52
-rw-r--r--arch/arm/lib/bootm.c141
-rw-r--r--arch/arm/lib/cache.c2
-rw-r--r--arch/arm/lib/crt0.S4
-rw-r--r--arch/arm/lib/relocate.S112
6 files changed, 190 insertions, 123 deletions
diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile
index 6ae161a51..8ad9f66a5 100644
--- a/arch/arm/lib/Makefile
+++ b/arch/arm/lib/Makefile
@@ -39,12 +39,14 @@ GLCOBJS += div0.o
SOBJS-y += crt0.o
ifndef CONFIG_SPL_BUILD
+SOBJS-y += relocate.o
ifndef CONFIG_SYS_GENERIC_BOARD
COBJS-y += board.o
endif
COBJS-y += bss.o
COBJS-y += bootm.o
+COBJS-$(CONFIG_OF_LIBFDT) += bootm-fdt.o
COBJS-$(CONFIG_SYS_L2_PL310) += cache-pl310.o
SOBJS-$(CONFIG_USE_ARCH_MEMSET) += memset.o
SOBJS-$(CONFIG_USE_ARCH_MEMCPY) += memcpy.o
diff --git a/arch/arm/lib/bootm-fdt.c b/arch/arm/lib/bootm-fdt.c
new file mode 100644
index 000000000..93888f8db
--- /dev/null
+++ b/arch/arm/lib/bootm-fdt.c
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2013, Google Inc.
+ *
+ * Copyright (C) 2011
+ * Corscience GmbH & Co. KG - Simon Schwarz <schwarz@corscience.de>
+ * - Added prep subcommand support
+ * - Reorganized source - modeled after powerpc version
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * Copyright (C) 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <fdt_support.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int arch_fixup_memory_node(void *blob)
+{
+ bd_t *bd = gd->bd;
+ int bank;
+ u64 start[CONFIG_NR_DRAM_BANKS];
+ u64 size[CONFIG_NR_DRAM_BANKS];
+
+ for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
+ start[bank] = bd->bi_dram[bank].start;
+ size[bank] = bd->bi_dram[bank].size;
+ }
+
+ return fdt_fixup_memory_banks(blob, start, size, CONFIG_NR_DRAM_BANKS);
+}
diff --git a/arch/arm/lib/bootm.c b/arch/arm/lib/bootm.c
index f3b30c57a..1b6e0ace4 100644
--- a/arch/arm/lib/bootm.c
+++ b/arch/arm/lib/bootm.c
@@ -22,7 +22,6 @@
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
*/
#include <common.h>
@@ -37,13 +36,7 @@
DECLARE_GLOBAL_DATA_PTR;
-#if defined(CONFIG_SETUP_MEMORY_TAGS) || \
- defined(CONFIG_CMDLINE_TAG) || \
- defined(CONFIG_INITRD_TAG) || \
- defined(CONFIG_SERIAL_TAG) || \
- defined(CONFIG_REVISION_TAG)
static struct tag *params;
-#endif
static ulong get_sp(void)
{
@@ -75,23 +68,6 @@ void arch_lmb_reserve(struct lmb *lmb)
gd->bd->bi_dram[0].start + gd->bd->bi_dram[0].size - sp);
}
-#ifdef CONFIG_OF_LIBFDT
-static int fixup_memory_node(void *blob)
-{
- bd_t *bd = gd->bd;
- int bank;
- u64 start[CONFIG_NR_DRAM_BANKS];
- u64 size[CONFIG_NR_DRAM_BANKS];
-
- for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
- start[bank] = bd->bi_dram[bank].start;
- size[bank] = bd->bi_dram[bank].size;
- }
-
- return fdt_fixup_memory_banks(blob, start, size, CONFIG_NR_DRAM_BANKS);
-}
-#endif
-
static void announce_and_cleanup(void)
{
printf("\nStarting kernel ...\n\n");
@@ -109,11 +85,6 @@ static void announce_and_cleanup(void)
cleanup_before_linux();
}
-#if defined(CONFIG_SETUP_MEMORY_TAGS) || \
- defined(CONFIG_CMDLINE_TAG) || \
- defined(CONFIG_INITRD_TAG) || \
- defined(CONFIG_SERIAL_TAG) || \
- defined(CONFIG_REVISION_TAG)
static void setup_start_tag (bd_t *bd)
{
params = (struct tag *)bd->bi_boot_params;
@@ -127,9 +98,7 @@ static void setup_start_tag (bd_t *bd)
params = tag_next (params);
}
-#endif
-#ifdef CONFIG_SETUP_MEMORY_TAGS
static void setup_memory_tags(bd_t *bd)
{
int i;
@@ -144,9 +113,7 @@ static void setup_memory_tags(bd_t *bd)
params = tag_next (params);
}
}
-#endif
-#ifdef CONFIG_CMDLINE_TAG
static void setup_commandline_tag(bd_t *bd, char *commandline)
{
char *p;
@@ -171,9 +138,7 @@ static void setup_commandline_tag(bd_t *bd, char *commandline)
params = tag_next (params);
}
-#endif
-#ifdef CONFIG_INITRD_TAG
static void setup_initrd_tag(bd_t *bd, ulong initrd_start, ulong initrd_end)
{
/* an ATAG_INITRD node tells the kernel where the compressed
@@ -187,14 +152,11 @@ static void setup_initrd_tag(bd_t *bd, ulong initrd_start, ulong initrd_end)
params = tag_next (params);
}
-#endif
-#ifdef CONFIG_SERIAL_TAG
-void setup_serial_tag(struct tag **tmp)
+static void setup_serial_tag(struct tag **tmp)
{
struct tag *params = *tmp;
struct tag_serialnr serialnr;
- void get_board_serial(struct tag_serialnr *serialnr);
get_board_serial(&serialnr);
params->hdr.tag = ATAG_SERIAL;
@@ -204,13 +166,10 @@ void setup_serial_tag(struct tag **tmp)
params = tag_next (params);
*tmp = params;
}
-#endif
-#ifdef CONFIG_REVISION_TAG
-void setup_revision_tag(struct tag **in_params)
+static void setup_revision_tag(struct tag **in_params)
{
u32 rev = 0;
- u32 get_board_rev(void);
rev = get_board_rev();
params->hdr.tag = ATAG_REVISION;
@@ -218,106 +177,50 @@ void setup_revision_tag(struct tag **in_params)
params->u.revision.rev = rev;
params = tag_next (params);
}
-#endif
-#if defined(CONFIG_SETUP_MEMORY_TAGS) || \
- defined(CONFIG_CMDLINE_TAG) || \
- defined(CONFIG_INITRD_TAG) || \
- defined(CONFIG_SERIAL_TAG) || \
- defined(CONFIG_REVISION_TAG)
static void setup_end_tag(bd_t *bd)
{
params->hdr.tag = ATAG_NONE;
params->hdr.size = 0;
}
-#endif
-
-#ifdef CONFIG_OF_LIBFDT
-static int create_fdt(bootm_headers_t *images)
-{
- ulong of_size = images->ft_len;
- char **of_flat_tree = &images->ft_addr;
- ulong *initrd_start = &images->initrd_start;
- ulong *initrd_end = &images->initrd_end;
- struct lmb *lmb = &images->lmb;
- ulong rd_len;
- int ret;
-
- debug("using: FDT\n");
-
- boot_fdt_add_mem_rsv_regions(lmb, *of_flat_tree);
-
- rd_len = images->rd_end - images->rd_start;
- ret = boot_ramdisk_high(lmb, images->rd_start, rd_len,
- initrd_start, initrd_end);
- if (ret)
- return ret;
-
- ret = boot_relocate_fdt(lmb, of_flat_tree, &of_size);
- if (ret)
- return ret;
-
- fdt_chosen(*of_flat_tree, 1);
- fixup_memory_node(*of_flat_tree);
- fdt_fixup_ethernet(*of_flat_tree);
- fdt_initrd(*of_flat_tree, *initrd_start, *initrd_end, 1);
-#ifdef CONFIG_OF_BOARD_SETUP
- ft_board_setup(*of_flat_tree, gd->bd);
-#endif
-
- return 0;
-}
-#endif
__weak void setup_board_tags(struct tag **in_params) {}
/* Subcommand: PREP */
static void boot_prep_linux(bootm_headers_t *images)
{
-#ifdef CONFIG_CMDLINE_TAG
char *commandline = getenv("bootargs");
-#endif
+ if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) {
#ifdef CONFIG_OF_LIBFDT
- if (images->ft_len) {
debug("using: FDT\n");
- if (create_fdt(images)) {
+ if (image_setup_linux(images)) {
printf("FDT creation failed! hanging...");
hang();
}
- } else
#endif
- {
-#if defined(CONFIG_SETUP_MEMORY_TAGS) || \
- defined(CONFIG_CMDLINE_TAG) || \
- defined(CONFIG_INITRD_TAG) || \
- defined(CONFIG_SERIAL_TAG) || \
- defined(CONFIG_REVISION_TAG)
+ } else if (BOOTM_ENABLE_TAGS) {
debug("using: ATAGS\n");
setup_start_tag(gd->bd);
-#ifdef CONFIG_SERIAL_TAG
- setup_serial_tag(&params);
-#endif
-#ifdef CONFIG_CMDLINE_TAG
- setup_commandline_tag(gd->bd, commandline);
-#endif
-#ifdef CONFIG_REVISION_TAG
- setup_revision_tag(&params);
-#endif
-#ifdef CONFIG_SETUP_MEMORY_TAGS
- setup_memory_tags(gd->bd);
-#endif
-#ifdef CONFIG_INITRD_TAG
- if (images->rd_start && images->rd_end)
- setup_initrd_tag(gd->bd, images->rd_start,
- images->rd_end);
-#endif
+ if (BOOTM_ENABLE_SERIAL_TAG)
+ setup_serial_tag(&params);
+ if (BOOTM_ENABLE_CMDLINE_TAG)
+ setup_commandline_tag(gd->bd, commandline);
+ if (BOOTM_ENABLE_REVISION_TAG)
+ setup_revision_tag(&params);
+ if (BOOTM_ENABLE_MEMORY_TAGS)
+ setup_memory_tags(gd->bd);
+ if (BOOTM_ENABLE_INITRD_TAG) {
+ if (images->rd_start && images->rd_end) {
+ setup_initrd_tag(gd->bd, images->rd_start,
+ images->rd_end);
+ }
+ }
setup_board_tags(&params);
setup_end_tag(gd->bd);
-#else /* all tags */
+ } else {
printf("FDT and ATAGS support not compiled in - hanging\n");
hang();
-#endif /* all tags */
}
}
@@ -342,11 +245,9 @@ static void boot_jump_linux(bootm_headers_t *images)
bootstage_mark(BOOTSTAGE_ID_RUN_OS);
announce_and_cleanup();
-#ifdef CONFIG_OF_LIBFDT
- if (images->ft_len)
+ if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len)
r2 = (unsigned long)images->ft_addr;
else
-#endif
r2 = gd->bd->bi_boot_params;
kernel_entry(0, machid, r2);
diff --git a/arch/arm/lib/cache.c b/arch/arm/lib/cache.c
index b545fb79b..8b1c8ed4b 100644
--- a/arch/arm/lib/cache.c
+++ b/arch/arm/lib/cache.c
@@ -27,7 +27,7 @@
void __flush_cache(unsigned long start, unsigned long size)
{
-#if defined(CONFIG_OMAP2420) || defined(CONFIG_ARM1136)
+#if defined(CONFIG_ARM1136)
void arm1136_cache_flush(void);
arm1136_cache_flush();
diff --git a/arch/arm/lib/crt0.S b/arch/arm/lib/crt0.S
index a9657d190..a5bffb8da 100644
--- a/arch/arm/lib/crt0.S
+++ b/arch/arm/lib/crt0.S
@@ -97,13 +97,13 @@ ENTRY(_main)
* 'here' but relocated.
*/
- ldr sp, [r8, #GD_START_ADDR_SP] /* r8 = gd->start_addr_sp */
+ ldr sp, [r8, #GD_START_ADDR_SP] /* sp = gd->start_addr_sp */
bic sp, sp, #7 /* 8-byte alignment for ABI compliance */
ldr r8, [r8, #GD_BD] /* r8 = gd->bd */
sub r8, r8, #GD_SIZE /* new GD is below bd */
adr lr, here
- ldr r0, [r8, #GD_RELOC_OFF] /* lr = gd->start_addr_sp */
+ ldr r0, [r8, #GD_RELOC_OFF] /* r0 = gd->reloc_off */
add lr, lr, r0
ldr r0, [r8, #GD_RELOCADDR] /* r0 = gd->relocaddr */
b relocate_code
diff --git a/arch/arm/lib/relocate.S b/arch/arm/lib/relocate.S
new file mode 100644
index 000000000..4446da94c
--- /dev/null
+++ b/arch/arm/lib/relocate.S
@@ -0,0 +1,112 @@
+/*
+ * relocate - common relocation function for ARM U-Boot
+ *
+ * Copyright (c) 2013 Albert ARIBAUD <albert.u.boot@aribaud.net>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <linux/linkage.h>
+
+/*
+ * void relocate_code(addr_moni)
+ *
+ * This function relocates the monitor code.
+ *
+ * NOTE:
+ * To prevent the code below from containing references with an R_ARM_ABS32
+ * relocation record type, we never refer to linker-defined symbols directly.
+ * Instead, we declare literals which contain their relative location with
+ * respect to relocate_code, and at run time, add relocate_code back to them.
+ */
+
+ENTRY(relocate_code)
+ mov r6, r0 /* save addr of destination */
+
+ ldr r0, =_start /* r0 <- SRC &_start */
+ subs r9, r6, r0 /* r9 <- relocation offset */
+ beq relocate_done /* skip relocation */
+ mov r1, r6 /* r1 <- scratch for copy loop */
+ adr r7, relocate_code /* r7 <- SRC &relocate_code */
+ ldr r3, _image_copy_end_ofs /* r3 <- __image_copy_end local ofs */
+ add r2, r7, r3 /* r2 <- SRC &__image_copy_end */
+
+copy_loop:
+ ldmia r0!, {r10-r11} /* copy from source address [r0] */
+ stmia r1!, {r10-r11} /* copy to target address [r1] */
+ cmp r0, r2 /* until source end address [r2] */
+ blo copy_loop
+
+ /*
+ * fix .rel.dyn relocations
+ */
+ ldr r10, _dynsym_start_ofs /* r10 <- __dynsym_start local ofs */
+ add r10, r10, r7 /* r10 <- SRC &__dynsym_start */
+ ldr r2, _rel_dyn_start_ofs /* r2 <- __rel_dyn_start local ofs */
+ add r2, r2, r7 /* r2 <- SRC &__rel_dyn_start */
+ ldr r3, _rel_dyn_end_ofs /* r3 <- __rel_dyn_end local ofs */
+ add r3, r3, r7 /* r3 <- SRC &__rel_dyn_end */
+fixloop:
+ ldr r0, [r2] /* r0 <- SRC location to fix up */
+ add r0, r0, r9 /* r0 <- DST location to fix up */
+ ldr r1, [r2, #4]
+ and r7, r1, #0xff
+ cmp r7, #23 /* relative fixup? */
+ beq fixrel
+ cmp r7, #2 /* absolute fixup? */
+ beq fixabs
+ /* ignore unknown type of fixup */
+ b fixnext
+fixabs:
+ /* absolute fix: set location to (offset) symbol value */
+ mov r1, r1, LSR #4 /* r1 <- symbol index in .dynsym */
+ add r1, r10, r1 /* r1 <- address of symbol in table */
+ ldr r1, [r1, #4] /* r1 <- symbol value */
+ add r1, r1, r9 /* r1 <- relocated sym addr */
+ b fixnext
+fixrel:
+ /* relative fix: increase location by offset */
+ ldr r1, [r0]
+ add r1, r1, r9
+fixnext:
+ str r1, [r0]
+ add r2, r2, #8 /* each rel.dyn entry is 8 bytes */
+ cmp r2, r3
+ blo fixloop
+
+relocate_done:
+
+ /* ARMv4- don't know bx lr but the assembler fails to see that */
+
+#ifdef __ARM_ARCH_4__
+ mov pc, lr
+#else
+ bx lr
+#endif
+
+_image_copy_end_ofs:
+ .word __image_copy_end - relocate_code
+_rel_dyn_start_ofs:
+ .word __rel_dyn_start - relocate_code
+_rel_dyn_end_ofs:
+ .word __rel_dyn_end - relocate_code
+_dynsym_start_ofs:
+ .word __dynsym_start - relocate_code
+
+ENDPROC(relocate_code)
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-10-31 08:45:02 +0000