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-rw-r--r--Makefile6
-rw-r--r--arch/arm/Kconfig1
-rw-r--r--arch/arm/Makefile7
-rw-r--r--arch/arm/cpu/Makefile3
-rw-r--r--arch/arm/cpu/start-pbl.c80
-rw-r--r--arch/arm/cpu/start-reset.c67
-rw-r--r--arch/arm/cpu/start.c54
-rw-r--r--arch/arm/lib/Makefile4
-rw-r--r--arch/arm/lib/barebox.lds.S3
-rw-r--r--arch/arm/pbl/Makefile25
-rw-r--r--arch/arm/pbl/zbarebox.lds.S73
-rw-r--r--common/Kconfig30
-rw-r--r--include/asm-generic/memory_layout.h1
-rw-r--r--pbl/Makefile5
-rw-r--r--pbl/misc.c14
-rw-r--r--pbl/string.c127
16 files changed, 459 insertions, 41 deletions
diff --git a/Makefile b/Makefile
index ca47cb1446..ce1506ca75 100644
--- a/Makefile
+++ b/Makefile
@@ -474,6 +474,8 @@ CFLAGS += $(call cc-option,-Wno-pointer-sign,)
# this default value
export KBUILD_IMAGE ?= barebox
+common-$(CONFIG_PBL_IMAGE) += pbl/
+
barebox-dirs := $(patsubst %/,%,$(filter %/, $(common-y)))
barebox-alldirs := $(sort $(barebox-dirs) $(patsubst %/,%,$(filter %/, \
@@ -520,7 +522,7 @@ barebox-lds := $(lds-y)
# May be overridden by arch/$(ARCH)/Makefile
quiet_cmd_barebox__ ?= LD $@
cmd_barebox__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_barebox) -o $@ \
- -T $(barebox-lds) $(barebox-head) \
+ -T $(barebox-lds) \
--start-group $(barebox-common) --end-group \
$(filter-out $(barebox-lds) $(barebox-common) FORCE ,$^)
@@ -674,7 +676,9 @@ OBJCOPYFLAGS_barebox.bin = -O binary
barebox.bin: barebox FORCE
$(call if_changed,objcopy)
+ifndef CONFIG_PBL_IMAGE
$(call cmd,check_file_size,$(CONFIG_BAREBOX_MAX_IMAGE_SIZE))
+endif
ifdef CONFIG_X86
barebox.S: barebox
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 08c742bfb3..7932afc131 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -4,6 +4,7 @@ config ARM
select HAS_MODULES
select HAVE_CONFIGURABLE_MEMORY_LAYOUT
select HAVE_CONFIGURABLE_TEXT_BASE
+ select HAVE_PBL_IMAGE
default y
config ARM_AMBA
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 1b60261bc8..0ea050ebed 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -197,6 +197,13 @@ ifeq ($(CONFIG_ARCH_DAVINCI),y)
KBUILD_IMAGE := barebox.ubl
endif
+pbl := arch/arm/pbl
+zbarebox.S zbarebox.bin zbarebox: barebox.bin
+ $(Q)$(MAKE) $(build)=$(pbl) $(pbl)/$@
+
+archclean:
+ $(MAKE) $(clean)=$(pbl)
+
all: $(KBUILD_IMAGE)
archprepare: maketools
diff --git a/arch/arm/cpu/Makefile b/arch/arm/cpu/Makefile
index 93a34a9ff1..78d300dba8 100644
--- a/arch/arm/cpu/Makefile
+++ b/arch/arm/cpu/Makefile
@@ -1,7 +1,7 @@
obj-y += cpu.o
obj-$(CONFIG_ARM_EXCEPTIONS) += exceptions.o
obj-$(CONFIG_ARM_EXCEPTIONS) += interrupts.o
-obj-y += start.o
+obj-y += start.o start-reset.o
#
# Any variants can be called as start-armxyz.S
@@ -15,3 +15,4 @@ obj-$(CONFIG_CPU_32v6) += cache-armv6.o
obj-$(CONFIG_CPU_32v7) += cache-armv7.o
obj-$(CONFIG_CACHE_L2X0) += cache-l2x0.o
+pbl-y += start-pbl.o start-reset.o
diff --git a/arch/arm/cpu/start-pbl.c b/arch/arm/cpu/start-pbl.c
new file mode 100644
index 0000000000..28d6f34449
--- /dev/null
+++ b/arch/arm/cpu/start-pbl.c
@@ -0,0 +1,80 @@
+/*
+ * start-pbl.c
+ *
+ * Copyright (c) 2010-2012 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
+ * Copyright (c) 2012 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
+ *
+ * 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 version 2
+ * as published by the Free Software Foundation.
+ *
+ * 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 <init.h>
+#include <asm/barebox-arm.h>
+#include <asm/barebox-arm-head.h>
+#include <asm-generic/memory_layout.h>
+#include <asm/sections.h>
+
+void __naked __section(.text_head_entry) pbl_start(void)
+{
+ barebox_arm_head();
+}
+
+void barebox_pbl(uint32_t offset)
+{
+}
+
+/*
+ * Board code can jump here by either returning from board_init_lowlevel
+ * or by calling this function directly.
+ */
+void __naked __section(.text_ll_return) board_init_lowlevel_return(void)
+{
+ uint32_t r, addr, offset;
+
+ /*
+ * Get runtime address of this function. Do not
+ * put any code above this.
+ */
+ __asm__ __volatile__("1: adr %0, 1b":"=r"(addr));
+
+ /* Setup the stack */
+ r = STACK_BASE + STACK_SIZE - 16;
+ __asm__ __volatile__("mov sp, %0" : : "r"(r));
+
+ /* Get offset between linked address and runtime address */
+ offset = (uint32_t)__ll_return - addr;
+
+ /* relocate to link address if necessary */
+ if (offset)
+ memcpy((void *)_text, (void *)(_text - offset),
+ __bss_start - _text);
+
+ /* clear bss */
+ memset(__bss_start, 0, __bss_stop - __bss_start);
+
+ /* flush I-cache before jumping to the copied binary */
+ __asm__ __volatile__("mcr p15, 0, %0, c7, c5, 0" : : "r" (0));
+
+ r = (unsigned int)&barebox_pbl;
+ /* call barebox_uncompress with its absolute address */
+ __asm__ __volatile__(
+ "mov r0, %1\n"
+ "mov pc, %0\n"
+ :
+ : "r"(r), "r"(offset),
+ : "r0");
+}
diff --git a/arch/arm/cpu/start-reset.c b/arch/arm/cpu/start-reset.c
new file mode 100644
index 0000000000..e0df676274
--- /dev/null
+++ b/arch/arm/cpu/start-reset.c
@@ -0,0 +1,67 @@
+/*
+ * start-reset.c
+ *
+ * Copyright (c) 2010 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
+ *
+ * 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 version 2
+ * as published by the Free Software Foundation.
+ *
+ * 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 <init.h>
+#include <asm/system.h>
+#include <asm/barebox-arm.h>
+#include <asm/sections.h>
+
+/*
+ * The actual reset vector. This code is position independent and usually
+ * does not run at the address it's linked at.
+ */
+void __naked __bare_init reset(void)
+{
+ uint32_t r;
+
+ /* set the cpu to SVC32 mode */
+ __asm__ __volatile__("mrs %0, cpsr":"=r"(r));
+ r &= ~0x1f;
+ r |= 0xd3;
+ __asm__ __volatile__("msr cpsr, %0" : : "r"(r));
+
+#ifdef CONFIG_ARCH_HAS_LOWLEVEL_INIT
+ arch_init_lowlevel();
+#endif
+
+ /* disable MMU stuff and caches */
+ r = get_cr();
+ r &= ~(CR_M | CR_C | CR_B | CR_S | CR_R | CR_V);
+ r |= CR_I;
+
+#if __LINUX_ARM_ARCH__ >= 6
+ r |= CR_U;
+#else
+ r |= CR_A;
+#endif
+
+#ifdef __ARMEB__
+ r |= CR_B;
+#endif
+ set_cr(r);
+
+#ifdef CONFIG_MACH_DO_LOWLEVEL_INIT
+ board_init_lowlevel();
+#endif
+ board_init_lowlevel_return();
+}
diff --git a/arch/arm/cpu/start.c b/arch/arm/cpu/start.c
index 112403e33e..8365a7516f 100644
--- a/arch/arm/cpu/start.c
+++ b/arch/arm/cpu/start.c
@@ -24,53 +24,31 @@
#include <init.h>
#include <asm/barebox-arm.h>
#include <asm/barebox-arm-head.h>
-#include <asm/system.h>
#include <asm-generic/memory_layout.h>
#include <asm/sections.h>
-void __naked __section(.text_entry) start(void)
-{
- barebox_arm_head();
-}
-
+#ifdef CONFIG_PBL_IMAGE
/*
- * The actual reset vector. This code is position independent and usually
- * does not run at the address it's linked at.
+ * First function in the pbl image. We get here from
+ * the pbl.
*/
-void __naked __bare_init reset(void)
+void __naked __section(.text_entry) start(void)
{
- uint32_t r;
+ u32 r;
- /* set the cpu to SVC32 mode */
- __asm__ __volatile__("mrs %0, cpsr":"=r"(r));
- r &= ~0x1f;
- r |= 0xd3;
- __asm__ __volatile__("msr cpsr, %0" : : "r"(r));
-
-#ifdef CONFIG_ARCH_HAS_LOWLEVEL_INIT
- arch_init_lowlevel();
-#endif
-
- /* disable MMU stuff and caches */
- r = get_cr();
- r &= ~(CR_M | CR_C | CR_B | CR_S | CR_R | CR_V);
- r |= CR_I;
+ /* Setup the stack */
+ r = STACK_BASE + STACK_SIZE - 16;
+ __asm__ __volatile__("mov sp, %0" : : "r"(r));
+ /* clear bss */
+ memset(__bss_start, 0, __bss_stop - __bss_start);
-#if __LINUX_ARM_ARCH__ >= 6
- r |= CR_U;
+ start_barebox();
+}
#else
- r |= CR_A;
-#endif
-
-#ifdef __ARMEB__
- r |= CR_B;
-#endif
- set_cr(r);
-#ifdef CONFIG_MACH_DO_LOWLEVEL_INIT
- board_init_lowlevel();
-#endif
- board_init_lowlevel_return();
+void __naked __section(.text_entry) start(void)
+{
+ barebox_arm_head();
}
/*
@@ -109,4 +87,4 @@ void __naked __section(.text_ll_return) board_init_lowlevel_return(void)
r = (unsigned int)&start_barebox;
__asm__ __volatile__("mov pc, %0" : : "r"(r));
}
-
+#endif
diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile
index 1eaf474911..9d0ff7a856 100644
--- a/arch/arm/lib/Makefile
+++ b/arch/arm/lib/Makefile
@@ -21,3 +21,7 @@ obj-$(CONFIG_ARM_OPTIMZED_STRING_FUNCTIONS) += memset.o
obj-$(CONFIG_ARM_UNWIND) += unwind.o
obj-$(CONFIG_MODULES) += module.o
extra-y += barebox.lds
+
+pbl-y += lib1funcs.o
+pbl-y += ashldi3.o
+pbl-y += div0.o
diff --git a/arch/arm/lib/barebox.lds.S b/arch/arm/lib/barebox.lds.S
index e0bae70f4f..a69013f7f5 100644
--- a/arch/arm/lib/barebox.lds.S
+++ b/arch/arm/lib/barebox.lds.S
@@ -31,8 +31,9 @@ SECTIONS
{
. = TEXT_BASE;
+#ifndef CONFIG_PBL_IMAGE
PRE_IMAGE
-
+#endif
. = ALIGN(4);
.text :
{
diff --git a/arch/arm/pbl/Makefile b/arch/arm/pbl/Makefile
new file mode 100644
index 0000000000..9b364bb35a
--- /dev/null
+++ b/arch/arm/pbl/Makefile
@@ -0,0 +1,25 @@
+
+OBJCOPYFLAGS_zbarebox.bin = -O binary
+
+targets := zbarebox.lds zbarebox zbarebox.bin zbarebox.S
+
+$(obj)/zbarebox.bin: $(obj)/zbarebox FORCE
+ $(call if_changed,objcopy)
+ $(call cmd,check_file_size,$(CONFIG_BAREBOX_MAX_IMAGE_SIZE))
+ @echo ' Barebox: $@ is ready'
+
+$(obj)/zbarebox.S: $(obj)/zbarebox FORCE
+ $(call if_changed,disasm)
+
+LDFLAGS_zbarebox := -Map zbarebox.map
+zbarebox-common := $(barebox-pbl-common)
+zbarebox-lds := $(obj)/zbarebox.lds
+
+quiet_cmd_zbarebox__ ?= LD $@
+ cmd_zbarebox__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_zbarebox) -o $@ \
+ -T $(zbarebox-lds) \
+ --start-group $(zbarebox-common) --end-group \
+ $(filter-out $(zbarebox-lds) $(zbarebox-common) FORCE ,$^)
+
+$(obj)/zbarebox: $(zbarebox-lds) $(zbarebox-common) FORCE
+ $(call if_changed,zbarebox__)
diff --git a/arch/arm/pbl/zbarebox.lds.S b/arch/arm/pbl/zbarebox.lds.S
new file mode 100644
index 0000000000..b6e8028fd3
--- /dev/null
+++ b/arch/arm/pbl/zbarebox.lds.S
@@ -0,0 +1,73 @@
+/*
+ * (C) Copyright 2012 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
+ *
+ * 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 <asm-generic/barebox.lds.h>
+#include <asm-generic/memory_layout.h>
+
+OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
+OUTPUT_ARCH(arm)
+ENTRY(pbl_start)
+SECTIONS
+{
+ . = HEAD_TEXT_BASE;
+
+ PRE_IMAGE
+
+ . = ALIGN(4);
+ .text :
+ {
+ _stext = .;
+ _text = .;
+ *(.text_head_entry*)
+ __ll_return = .;
+ *(.text_ll_return*)
+ __bare_init_start = .;
+ *(.text_bare_init*)
+ __bare_init_end = .;
+ *(.text*)
+ }
+ BAREBOX_BARE_INIT_SIZE
+
+ . = ALIGN(4);
+ .rodata : { *(.rodata*) }
+
+ _etext = .; /* End of text and rodata section */
+
+ . = ALIGN(4);
+ .data : { *(.data*) }
+
+ . = ALIGN(4);
+ __bss_start = .;
+ .bss : { *(.bss*) }
+ __bss_stop = .;
+ _end = .;
+
+ . = ALIGN(4);
+ __piggydata_start = .;
+ .piggydata : {
+ *(.piggydata)
+ }
+ __piggydata_end = .;
+
+ _barebox_image_size = __piggydata_end - HEAD_TEXT_BASE;
+}
diff --git a/common/Kconfig b/common/Kconfig
index 7eb5b49a8f..7b5a3077ea 100644
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -101,6 +101,36 @@ config ENVIRONMENT_VARIABLES
menu "memory layout "
+config HAVE_PBL_IMAGE
+ bool
+
+config HAVE_IMAGE_COMPRESSION
+ bool
+
+config PBL_IMAGE
+ bool "Pre-Bootloader image"
+ depends on HAVE_PBL_IMAGE
+
+if PBL_IMAGE
+
+config IMAGE_COMPRESSION
+ bool "Compressed image"
+ depends on HAVE_IMAGE_COMPRESSION
+
+if IMAGE_COMPRESSION
+
+choice
+ prompt "Compression"
+
+config IMAGE_COMPRESSION_LZO
+ bool "lzo"
+
+endchoice
+
+endif
+
+endif
+
config MMU
bool "Enable MMU"
help
diff --git a/include/asm-generic/memory_layout.h b/include/asm-generic/memory_layout.h
index 941cd42955..eb1607f36d 100644
--- a/include/asm-generic/memory_layout.h
+++ b/include/asm-generic/memory_layout.h
@@ -13,6 +13,7 @@
#endif
+#define HEAD_TEXT_BASE MALLOC_BASE
#define MALLOC_SIZE CONFIG_MALLOC_SIZE
#define STACK_SIZE CONFIG_STACK_SIZE
diff --git a/pbl/Makefile b/pbl/Makefile
new file mode 100644
index 0000000000..7169c6c72a
--- /dev/null
+++ b/pbl/Makefile
@@ -0,0 +1,5 @@
+#
+# only unsed by the pbl
+#
+pbl-y += misc.o
+pbl-y += string.o
diff --git a/pbl/misc.c b/pbl/misc.c
new file mode 100644
index 0000000000..47e9ceabe3
--- /dev/null
+++ b/pbl/misc.c
@@ -0,0 +1,14 @@
+#include <common.h>
+#include <init.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/ctype.h>
+
+void __noreturn panic(const char *fmt, ...)
+{
+ while(1);
+}
+
+void start_barebox(void)
+{
+}
diff --git a/pbl/string.c b/pbl/string.c
new file mode 100644
index 0000000000..6787e82c9b
--- /dev/null
+++ b/pbl/string.c
@@ -0,0 +1,127 @@
+/*
+ * arch/arm/boot/compressed/string.c
+ *
+ * Small subset of simple string routines
+ */
+
+#include <linux/types.h>
+
+void *memcpy(void *__dest, __const void *__src, size_t __n)
+{
+ int i = 0;
+ unsigned char *d = (unsigned char *)__dest, *s = (unsigned char *)__src;
+
+ for (i = __n >> 3; i > 0; i--) {
+ *d++ = *s++;
+ *d++ = *s++;
+ *d++ = *s++;
+ *d++ = *s++;
+ *d++ = *s++;
+ *d++ = *s++;
+ *d++ = *s++;
+ *d++ = *s++;
+ }
+
+ if (__n & 1 << 2) {
+ *d++ = *s++;
+ *d++ = *s++;
+ *d++ = *s++;
+ *d++ = *s++;
+ }
+
+ if (__n & 1 << 1) {
+ *d++ = *s++;
+ *d++ = *s++;
+ }
+
+ if (__n & 1)
+ *d++ = *s++;
+
+ return __dest;
+}
+
+void *memmove(void *__dest, __const void *__src, size_t count)
+{
+ unsigned char *d = __dest;
+ const unsigned char *s = __src;
+
+ if (__dest == __src)
+ return __dest;
+
+ if (__dest < __src)
+ return memcpy(__dest, __src, count);
+
+ while (count--)
+ d[count] = s[count];
+ return __dest;
+}
+
+size_t strlen(const char *s)
+{
+ const char *sc = s;
+
+ while (*sc != '\0')
+ sc++;
+ return sc - s;
+}
+
+int memcmp(const void *cs, const void *ct, size_t count)
+{
+ const unsigned char *su1 = cs, *su2 = ct, *end = su1 + count;
+ int res = 0;
+
+ while (su1 < end) {
+ res = *su1++ - *su2++;
+ if (res)
+ break;
+ }
+ return res;
+}
+
+int strcmp(const char *cs, const char *ct)
+{
+ unsigned char c1, c2;
+ int res = 0;
+
+ do {
+ c1 = *cs++;
+ c2 = *ct++;
+ res = c1 - c2;
+ if (res)
+ break;
+ } while (c1);
+ return res;
+}
+
+void *memchr(const void *s, int c, size_t count)
+{
+ const unsigned char *p = s;
+
+ while (count--)
+ if ((unsigned char)c == *p++)
+ return (void *)(p - 1);
+ return NULL;
+}
+
+char *strchr(const char *s, int c)
+{
+ while (*s != (char)c)
+ if (*s++ == '\0')
+ return NULL;
+ return (char *)s;
+}
+
+#undef memset
+
+void *memset(void *s, int c, size_t count)
+{
+ char *xs = s;
+ while (count--)
+ *xs++ = c;
+ return s;
+}
+
+void __memzero(void *s, size_t count)
+{
+ memset(s, 0, count);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-10 23:10:58 +0000