February 2008 - U-Boot

[U-Boot-Users] [PATCH] Add *~ to .gitignore
by Niklaus Giger 14 Feb '08

14 Feb '08

One should never add a backup file ending in with ~ to the git repository. Signed-off-by: Niklaus Giger <niklaus.giger(a)netstal.com> --- .gitignore | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/.gitignore b/.gitignore index cda275e..37f2c1d 100644 --- a/.gitignore +++ b/.gitignore @@ -10,6 +10,7 @@ *.orig *.a *.o +*~ # # Top-level generic files -- 1.5.2.5

4 3

[U-Boot-Users] [PATCH] Remove duplicate defines for ARRAY_SIZE
by Kumar Gala 14 Feb '08

14 Feb '08

Signed-off-by: Kumar Gala <galak(a)kernel.crashing.org> --- cpu/arm926ejs/cpuinfo.c | 2 -- drivers/mtd/jedec_flash.c | 4 ---- drivers/net/rtl8169.c | 2 -- include/common.h | 2 ++ 4 files changed, 2 insertions(+), 8 deletions(-) diff --git a/cpu/arm926ejs/cpuinfo.c b/cpu/arm926ejs/cpuinfo.c index 8c98631..35ba7db 100644 --- a/cpu/arm926ejs/cpuinfo.c +++ b/cpu/arm926ejs/cpuinfo.c @@ -18,8 +18,6 @@ #define omap_readw(x) *(volatile unsigned short *)(x) #define omap_readl(x) *(volatile unsigned long *)(x) -#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) - #define OMAP_DIE_ID_0 0xfffe1800 #define OMAP_DIE_ID_1 0xfffe1804 #define OMAP_PRODUCTION_ID_0 0xfffe2000 diff --git a/drivers/mtd/jedec_flash.c b/drivers/mtd/jedec_flash.c index 94e87cb..41aad3b 100644 --- a/drivers/mtd/jedec_flash.c +++ b/drivers/mtd/jedec_flash.c @@ -218,10 +218,6 @@ static const struct amd_flash_info jedec_table[] = { #endif }; - -#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) - - static inline void fill_info(flash_info_t *info, const struct amd_flash_info *jedec_entry, ulong base) { int i,j; diff --git a/drivers/net/rtl8169.c b/drivers/net/rtl8169.c index 57ccbd9..d71323f 100644 --- a/drivers/net/rtl8169.c +++ b/drivers/net/rtl8169.c @@ -352,8 +352,6 @@ int mdio_read(int RegAddr) return value; } -#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) - static int rtl8169_init_board(struct eth_device *dev) { int i; diff --git a/include/common.h b/include/common.h index 54083f1..0813a11 100644 --- a/include/common.h +++ b/include/common.h @@ -663,4 +663,6 @@ void inline show_boot_progress (int val); #error Read section CONFIG_SKIP_LOWLEVEL_INIT in README. #endif +#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) + #endif /* __COMMON_H_ */ -- 1.5.3.7

2 1

[U-Boot-Users] [PATCH] Fix incorrect address test in AT91F_DataflashSelect
by Stelian Pop 14 Feb '08

14 Feb '08

Fix incorrect address test in AT91F_DataflashSelect(). Signed-off-by: Stelian Pop <stelian(a)popies.net> --- drivers/mtd/dataflash.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/mtd/dataflash.c b/drivers/mtd/dataflash.c index 4084ff7..2421407 100644 --- a/drivers/mtd/dataflash.c +++ b/drivers/mtd/dataflash.c @@ -309,7 +309,7 @@ AT91PS_DataFlash AT91F_DataflashSelect (AT91PS_DataFlash pFlash, for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) if ( dataflash_info[i].id - && ((((int) addr) & 0xFF000000) == + && ((((int) *addr) & 0xFF000000) == dataflash_info[i].logical_address)) { addr_valid = 1; break; -- 1.5.3.3 -- Stelian Pop <stelian(a)popies.net>

2 1

[U-Boot-Users] Bug in cpu/74xx_7xx/speed.c ?
by Reinhard Arlt 14 Feb '08

14 Feb '08

Hello, during test with the 1.3.1 Version of u-boot, i have noticed, that the calculation of the cpu speed for a 1GHz 750GX is wrong. Here is a patch to fix the problem, it is done the same way as for the other supported cpu's. Kind regards Reinhard Arlt ------------------------------------------------------------------------- Dipl.-Ing. Reinhard Arlt Head SD1 esd electronic system design gmbh Vahrenwalder Str. 207 - 30165 Hannover - GERMANY Phone: +49-511-37298-0 - Fax: +49-511-37298-68 Please visit our homepage http://www.esd.eu Quality Products - Made in Germany --- u-boot-1.3.1_20080212/cpu/74xx_7xx/speed.c 2008-02-12 15:01:13.000000000 +0100 +++ u-boot-1.3.1_head/cpu/74xx_7xx/speed.c 2008-02-12 12:59:46.000000000 +0100 @@ -149,8 +149,8 @@ int get_clocks (void) case CPU_750GX: case CPU_750FX: - clock = (gd->bus_clk / 10) * - hid1_fx_multipliers_x_10[get_hid1 () >> 27]; + clock = gd->bus_clk * + hid1_fx_multipliers_x_10[get_hid1 () >> 27] / 10; break; case CPU_7450:

2 1

[U-Boot-Users] [PATCH] Add CFG_MPC86xx_DDR_ADDR and CFG_MPC86xx_DDR2_ADDR symbols
by Jon Loeliger 14 Feb '08

14 Feb '08

These replace direct structure references for IMMR sections. Signed-off-by: Jon Loeliger <jdl(a)freescale.com> --- include/asm-ppc/immap_86xx.h | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/include/asm-ppc/immap_86xx.h b/include/asm-ppc/immap_86xx.h index 169725b..a15c6ec 100644 --- a/include/asm-ppc/immap_86xx.h +++ b/include/asm-ppc/immap_86xx.h @@ -1330,4 +1330,9 @@ typedef struct immap { extern immap_t *immr; +#define CFG_MPC86xx_DDR_OFFSET (0x2000) +#define CFG_MPC86xx_DDR_ADDR (CFG_IMMR + CFG_MPC86xx_DDR_OFFSET) +#define CFG_MPC86xx_DDR2_OFFSET (0x6000) +#define CFG_MPC86xx_DDR2_ADDR (CFG_IMMR + CFG_MPC86xx_DDR2_OFFSET) + #endif /*__IMMAP_86xx__*/ -- 1.5.4.rc5.19.g0509eb

2 2

[U-Boot-Users] [PATCH] Fix building of fdt_support.c if DEBUG set
by Kumar Gala 13 Feb '08

13 Feb '08

Signed-off-by: Kumar Gala <galak(a)kernel.crashing.org> --- Wolfgang, would like to see this go into mainline as it fixes building. common/fdt_support.c | 6 +++--- 1 files changed, 3 insertions(+), 3 deletions(-) diff --git a/common/fdt_support.c b/common/fdt_support.c index 92f1c7f..69eb667 100644 --- a/common/fdt_support.c +++ b/common/fdt_support.c @@ -415,7 +415,7 @@ void do_fixup_by_path(void *fdt, const char *path, const char *prop, { #if defined(DEBUG) int i; - debug("Updating property '%s/%s' = ", node, prop); + debug("Updating property '%s/%s' = ", path, prop); for (i = 0; i < len; i++) debug(" %.2x", *(u8*)(val+i)); debug("\n"); @@ -441,7 +441,7 @@ void do_fixup_by_prop(void *fdt, int off; #if defined(DEBUG) int i; - debug("Updating property '%s/%s' = ", node, prop); + debug("Updating property '%s' = ", prop); for (i = 0; i < len; i++) debug(" %.2x", *(u8*)(val+i)); debug("\n"); @@ -468,7 +468,7 @@ void do_fixup_by_compat(void *fdt, const char *compat, int off = -1; #if defined(DEBUG) int i; - debug("Updating property '%s/%s' = ", node, prop); + debug("Updating property '%s' = ", prop); for (i = 0; i < len; i++) debug(" %.2x", *(u8*)(val+i)); debug("\n"); -- 1.5.3.8

4 3

[U-Boot-Users] [PATCH v2] Add expr command
by Kumar Gala 13 Feb '08

13 Feb '08

Add a simple expr command that will set an env variable as the result of the command. This allows us to do simple math in shell. The following operations are supported: &, |, ^, +, -, *, /. Signed-off-by: Kumar Gala <galak(a)kernel.crashing.org> --- Added xor (^) and check that the op arg is only one char as suggsted by Andreas. - k common/Makefile | 1 + common/cmd_expr.c | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 71 insertions(+), 0 deletions(-) create mode 100644 common/cmd_expr.c diff --git a/common/Makefile b/common/Makefile index 1639109..4f3e711 100644 --- a/common/Makefile +++ b/common/Makefile @@ -54,6 +54,7 @@ COBJS-$(CONFIG_CMD_DOC) += cmd_doc.o COBJS-$(CONFIG_CMD_DTT) += cmd_dtt.o COBJS-y += cmd_eeprom.o COBJS-$(CONFIG_CMD_ELF) += cmd_elf.o +COBJS-$(CONFIG_CMD_EXPR) += cmd_expr.o COBJS-$(CONFIG_CMD_EXT2) += cmd_ext2.o COBJS-$(CONFIG_CMD_FAT) += cmd_fat.o COBJS-y += cmd_fdc.o diff --git a/common/cmd_expr.c b/common/cmd_expr.c new file mode 100644 index 0000000..441865a --- /dev/null +++ b/common/cmd_expr.c @@ -0,0 +1,70 @@ +/* + * Copyright 2008 Freescale Semiconductor, Inc. + * + * 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 + */ + +/* + * This file provides a shell like 'expr' function to return. + */ + +#include <common.h> +#include <config.h> +#include <command.h> + +int do_expr (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + ulong a, b; + char buf[16]; + + /* Validate arguments */ + if ((argc != 5) || (strlen(argv[3]) != 1)) { + printf("Usage:\n%s\n", cmdtp->usage); + return 1; + } + + a = simple_strtoul(argv[2], NULL, 16); + b = simple_strtoul(argv[4], NULL, 16); + + switch (argv[3][0]) { + case '|': sprintf(buf, "%lx", (a | b)); break; + case '&': sprintf(buf, "%lx", (a & b)); break; + case '+': sprintf(buf, "%lx", (a + b)); break; + case '^': sprintf(buf, "%lx", (a ^ b)); break; + case '-': sprintf(buf, "%lx", (a - b)); break; + case '*': sprintf(buf, "%lx", (a * b)); break; + case '/': sprintf(buf, "%lx", (a / b)); break; + case '%': sprintf(buf, "%lx", (a % b)); break; + default: + printf("invalid op\n"); + return 1; + } + + setenv(argv[1], buf); + + return 0; +} + +U_BOOT_CMD( + expr, 5, 0, do_expr, + "expr - set environment variable as the result of eval expression\n", + "name value1 <op> value2\n" + " - set environment variable 'name' to the result of the evaluated\n" + " express specified by <op>. <op> can be &, |, ^, +, -, *, /, %\n" +); -- 1.5.3.8

4 4

[U-Boot-Users] [PATCH][ARM] Rationalize ARM compiler options
by Peter Pearse 13 Feb '08

13 Feb '08

Signed-off-by: Peter Pearse <peter.pearse(a)arm.com> --- diff --git a/cpu/arm1136/config.mk b/cpu/arm1136/config.mk old mode 100644 new mode 100755 index 6ab0dd3..5c64aa7 --- a/cpu/arm1136/config.mk +++ b/cpu/arm1136/config.mk @@ -2,6 +2,7 @@ # (C) Copyright 2002 # Gary Jennejohn, DENX Software Engineering, <gj(a)denx.de> # +# # See file CREDITS for list of people who contributed to this # project. # @@ -20,16 +21,15 @@ # Foundation, Inc., 59 Temple Place, Suite 330, Boston, # MA 02111-1307 USA # -PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 \ - -msoft-float +# ========================================================================= +# See doc/README.ARM.config.mk for a justification of the ARM specific options +# ========================================================================= +PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 -# Make ARMv5 to allow more compilers to work, even though its v6. -PLATFORM_CPPFLAGS += -march=armv5 +PLATFORM_CPPFLAGS += -march=armv6 # ========================================================================= -# # Supply options according to compiler version -# # ========================================================================= PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) -PLATFORM_CPPFLAGS +=$(call cc-option,-mno-thumb-interwork,) PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) + diff --git a/cpu/arm720t/config.mk b/cpu/arm720t/config.mk old mode 100644 new mode 100755 index 641b91c..2da312e --- a/cpu/arm720t/config.mk +++ b/cpu/arm720t/config.mk @@ -21,15 +21,15 @@ # Foundation, Inc., 59 Temple Place, Suite 330, Boston, # MA 02111-1307 USA # +# ========================================================================= +# See doc/README.ARM.config.mk for a justification of the ARM specific options +# ========================================================================= +PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 -PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 \ - -msoft-float - -PLATFORM_CPPFLAGS += -march=armv4 -mtune=arm7tdmi +PLATFORM_CPPFLAGS += -march=armv4t # ========================================================================= -# # Supply options according to compiler version -# # ========================================================================= PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) + diff --git a/cpu/arm920t/config.mk b/cpu/arm920t/config.mk old mode 100644 new mode 100755 index 8db4adb..b5605b3 --- a/cpu/arm920t/config.mk +++ b/cpu/arm920t/config.mk @@ -2,6 +2,7 @@ # (C) Copyright 2002 # Gary Jennejohn, DENX Software Engineering, <gj(a)denx.de> # +# # See file CREDITS for list of people who contributed to this # project. # @@ -20,15 +21,15 @@ # Foundation, Inc., 59 Temple Place, Suite 330, Boston, # MA 02111-1307 USA # +# ========================================================================= +# See doc/README.ARM.config.mk for a justification of the ARM specific options +# ========================================================================= +PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 -PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 \ - -msoft-float - -PLATFORM_CPPFLAGS += -march=armv4 +PLATFORM_CPPFLAGS += -march=armv4t # ========================================================================= -# # Supply options according to compiler version -# # ========================================================================= PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) + diff --git a/cpu/arm925t/config.mk b/cpu/arm925t/config.mk old mode 100644 new mode 100755 index 8db4adb..b5605b3 --- a/cpu/arm925t/config.mk +++ b/cpu/arm925t/config.mk @@ -2,6 +2,7 @@ # (C) Copyright 2002 # Gary Jennejohn, DENX Software Engineering, <gj(a)denx.de> # +# # See file CREDITS for list of people who contributed to this # project. # @@ -20,15 +21,15 @@ # Foundation, Inc., 59 Temple Place, Suite 330, Boston, # MA 02111-1307 USA # +# ========================================================================= +# See doc/README.ARM.config.mk for a justification of the ARM specific options +# ========================================================================= +PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 -PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 \ - -msoft-float - -PLATFORM_CPPFLAGS += -march=armv4 +PLATFORM_CPPFLAGS += -march=armv4t # ========================================================================= -# # Supply options according to compiler version -# # ========================================================================= PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) + diff --git a/cpu/arm926ejs/config.mk b/cpu/arm926ejs/config.mk old mode 100644 new mode 100755 index 8db4adb..7f531f8 --- a/cpu/arm926ejs/config.mk +++ b/cpu/arm926ejs/config.mk @@ -2,6 +2,7 @@ # (C) Copyright 2002 # Gary Jennejohn, DENX Software Engineering, <gj(a)denx.de> # +# # See file CREDITS for list of people who contributed to this # project. # @@ -20,15 +21,15 @@ # Foundation, Inc., 59 Temple Place, Suite 330, Boston, # MA 02111-1307 USA # +# ========================================================================= +# See doc/README.ARM.config.mk for a justification of the ARM specific options +# ========================================================================= +PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 -PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 \ - -msoft-float - -PLATFORM_CPPFLAGS += -march=armv4 +PLATFORM_CPPFLAGS += -march=armv5te # ========================================================================= -# # Supply options according to compiler version -# # ========================================================================= PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) + diff --git a/cpu/arm946es/config.mk b/cpu/arm946es/config.mk old mode 100644 new mode 100755 index 81ca288..7f531f8 --- a/cpu/arm946es/config.mk +++ b/cpu/arm946es/config.mk @@ -2,6 +2,7 @@ # (C) Copyright 2002 # Gary Jennejohn, DENX Software Engineering, <gj(a)denx.de> # +# # See file CREDITS for list of people who contributed to this # project. # @@ -20,8 +21,15 @@ # Foundation, Inc., 59 Temple Place, Suite 330, Boston, # MA 02111-1307 USA # +# ========================================================================= +# See doc/README.ARM.config.mk for a justification of the ARM specific options +# ========================================================================= +PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 -PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 \ - -msoft-float +PLATFORM_CPPFLAGS += -march=armv5te +# ========================================================================= +# Supply options according to compiler version +# ========================================================================= +PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) +PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -PLATFORM_CPPFLAGS += -march=armv4 diff --git a/cpu/arm_intcm/config.mk b/cpu/arm_intcm/config.mk old mode 100644 new mode 100755 index 81ca288..6766074 --- a/cpu/arm_intcm/config.mk +++ b/cpu/arm_intcm/config.mk @@ -2,6 +2,7 @@ # (C) Copyright 2002 # Gary Jennejohn, DENX Software Engineering, <gj(a)denx.de> # +# # See file CREDITS for list of people who contributed to this # project. # @@ -20,8 +21,15 @@ # Foundation, Inc., 59 Temple Place, Suite 330, Boston, # MA 02111-1307 USA # +# ========================================================================= +# See doc/README.ARM.config.mk for a justification of the ARM specific options +# ========================================================================= +PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 +# This cpu intended for unknown cpu - use lowest common architecture +PLATFORM_CPPFLAGS += -march=armv4 +# ========================================================================= +# Supply options according to compiler version +# ========================================================================= +PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) +PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 \ - -msoft-float - -PLATFORM_CPPFLAGS += -march=armv4 diff --git a/cpu/ixp/config.mk b/cpu/ixp/config.mk old mode 100644 new mode 100755 index a71a20b..da67bae --- a/cpu/ixp/config.mk +++ b/cpu/ixp/config.mk @@ -21,17 +21,18 @@ # Foundation, Inc., 59 Temple Place, Suite 330, Boston, # MA 02111-1307 USA # - -BIG_ENDIAN = y - -PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 \ - -msoft-float -mbig-endian +# ========================================================================= +# See doc/README.ARM.config.mk for a justification of the ARM specific options +# ========================================================================= +PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 -mbig-endian PLATFORM_CPPFLAGS += -mbig-endian -march=armv5te -mtune=strongarm1100 # ========================================================================= -# # Supply options according to compiler version -# # ========================================================================= PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) + +BIG_ENDIAN = y + + diff --git a/cpu/lh7a40x/config.mk b/cpu/lh7a40x/config.mk old mode 100644 new mode 100755 index 10e755b..dfa6dfd --- a/cpu/lh7a40x/config.mk +++ b/cpu/lh7a40x/config.mk @@ -2,6 +2,7 @@ # (C) Copyright 2002 # Gary Jennejohn, DENX Software Engineering, <gj(a)denx.de> # +# # See file CREDITS for list of people who contributed to this # project. # @@ -20,15 +21,14 @@ # Foundation, Inc., 59 Temple Place, Suite 330, Boston, # MA 02111-1307 USA # - -PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 \ - -msoft-float +# ========================================================================= +# See doc/README.ARM.config.mk for a justification of the ARM specific options +# ========================================================================= +PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 PLATFORM_CPPFLAGS += -march=armv4 # ========================================================================= -# # Supply options according to compiler version -# -# ======================================================================== +# ========================================================================= PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) diff --git a/cpu/pxa/config.mk b/cpu/pxa/config.mk old mode 100644 new mode 100755 index f0b86b7..bd9ef17 --- a/cpu/pxa/config.mk +++ b/cpu/pxa/config.mk @@ -21,15 +21,14 @@ # Foundation, Inc., 59 Temple Place, Suite 330, Boston, # MA 02111-1307 USA # - -PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 \ - -msoft-float +# ========================================================================= +# See doc/README.ARM.config.mk for a justification of the ARM specific options +# ========================================================================= +PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 PLATFORM_CPPFLAGS += -march=armv5te -mtune=xscale # ========================================================================= -# # Supply options according to compiler version -# -# ======================================================================== +# ========================================================================= PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) diff --git a/cpu/s3c44b0/config.mk b/cpu/s3c44b0/config.mk old mode 100644 new mode 100755 index 6dc9c46..8e77969 --- a/cpu/s3c44b0/config.mk +++ b/cpu/s3c44b0/config.mk @@ -21,15 +21,14 @@ # Foundation, Inc., 59 Temple Place, Suite 330, Boston, # MA 02111-1307 USA # +# ========================================================================= +# See doc/README.ARM.config.mk for a justification of the ARM specific options +# ========================================================================= +PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 -PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 \ - -msoft-float - -PLATFORM_CPPFLAGS += -march=armv4 -mtune=arm7tdmi -msoft-float +PLATFORM_CPPFLAGS += -march=armv4 -mtune=arm7tdmi # ========================================================================= -# # Supply options according to compiler version -# -# ======================================================================== +# ========================================================================= PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) diff --git a/cpu/sa1100/config.mk b/cpu/sa1100/config.mk old mode 100644 new mode 100755 index 5be7dfb..cf9c296 --- a/cpu/sa1100/config.mk +++ b/cpu/sa1100/config.mk @@ -21,15 +21,14 @@ # Foundation, Inc., 59 Temple Place, Suite 330, Boston, # MA 02111-1307 USA # - -PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 \ - -msoft-float +# ========================================================================= +# See doc/README.ARM.config.mk for a justification of the ARM specific options +# ========================================================================= +PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 PLATFORM_CPPFLAGS += -march=armv4 -mtune=strongarm1100 # ========================================================================= -# # Supply options according to compiler version -# -# ======================================================================== +# ========================================================================= PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) diff --git a/doc/README.ARM.config.mk b/doc/README.ARM.config.mk new file mode 100755 index 0000000..d9d35e4 --- /dev/null +++ b/doc/README.ARM.config.mk @@ -0,0 +1,74 @@ +The GNU compiler ARM specific options in the ARM cpu directory config.mk files +are intended to be general enough to apply for all boards with those cpus, +when compiled with the latest ELDK arm toolchains. + +Individual boards and/or blocks of code may have their performance and/or +memory footprint improved by using more particular combinations of options +and/or toolchains. You are encouraged to submit evidence of such +improvements to u-boot-users(a)lists.sourceforge.net. However, it is +unlikely that such individual settings will be incorporated into the main +code-tree. This file might provide a good place to document them - see +"Board and/or toolchain specific optimizations" below. + +The make function cc-option imported from the linux kernel to u-boot/config.mk +is used to +a) check whether a particular option is supported by the toolchain +b) provide an alternative to unsupported options, where applicable. + +-march indicates the architecture implemented by the processor core. + +The gcc-3.4.6 manual has:- + +-mapcs-32 + Generate code for a processor running with a 32-bit program counter, + and conforming to the function calling standards for the APCS + 32-bit option. + This flag is deprecated. + Future releases of GCC will make this flag unconditional. +-malignment-traps + Generate code that will not trap if the MMU has alignment traps + enabled. On ARM architectures prior to ARMv4, there were no + instructions to access half-word objects stored in memory. However, + when reading from memory a feature of the ARM architecture allows a + word load to be used, even if the address is unaligned, and the + processor core will rotate the data as it is being loaded. + This option tells the compiler that such misaligned accesses will cause + a MMU trap and that it should instead synthesize the access as a series + of byte accesses. The compiler can still use word accesses to load + half-word data if it knows that the address is aligned to a word + boundary. + This option has no effect when compiling for ARM architecture 4 or + later, since these processors have instructions to directly access + half-word objects in memory. + -mshort-load-bytes + +The gcc-2.9.53 manual has:- + +-mshort-load-bytes + Do not try to load half-words (eg `short's) by loading a word from an + unaligned address. For some targets the MMU is configured to trap + unaligned loads; use this option to generate code that is safe in + these environments. + +Please note:- +a) U-Boot is intended to be statically linked binary. + Hence toolchains which make linux kernel calls e.g. to raise() should + not be used. +b) U-Boot contains no floating point code, hence the -msoft-float option + is not valid. +c) -ffixed-r8 will not allow access to the gd pointer in ARM FIQ mode + since FIQ mode has it's own r8. + A patch to use another shared register is planned by + peter.pearse<at>arm.com. +d) Information regarding the Code Sourcery EABI toolchains is available + from http://www.codesourcery.com. + See esp. http://www.codesourcery.com/archives. +e) If using a toolchain which has not been built to offer ARM/thumb + interworking the following line, added to config.mk will remove + warnings of the form "X does not support interworking, whereas Y does" + + PLATFORM_CPPFLAGS +=$(call cc-option,-mno-thumb-interwork,) + +Board and/or toolchain specific optimizations +============================================= +TBD --- Also available from git://linux-arm.org/u-boot-armdev.git#080212_options

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[U-Boot-Users] ability to do simple math in u-boot shell?
by Kumar Gala 13 Feb '08

13 Feb '08

I can't seem to find anything that says we can do thus, but wondering if there was any way to get simple math (addition) out of the u-boot shell? Was looking for something like 'expr'. - k

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[U-Boot-Users] [new uImage] Code available on new-image branch of u-boot-testing repo
by Bartlomiej Sieka 13 Feb '08

13 Feb '08

Hello, The ongoing new uImage format work that has been posted to the list in the form of patches, is now also available from the new-image branch of the u-boot-testing repository at Denx (thanks Wolfgang!). You can browse the code by going to: http://www.denx.de/cgi-bin/gitweb.cgi?p=u-boot/u-boot-testing.git;a=shortlo… Or you can pull it locally to take a closer look, test, etc, by using: git pull \ git://www.denx.de/git/u-boot-testing.git/ new-image:u-boot-testing/new-image To recap the current state of development: the above branch contains clean-up and reorganization of the old format code, done in preparation for adding new format handling. As the reorganization touches a lot of common and critical code, people are encouraged to review, test and provide feedback Current work on new format handling will be posted to the list and made available on the new-image branch as well. Looking forward to the comments. Regards, Bartlomiej

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