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Merge branch 'master' of git://www.denx.de/git/u-boot-mips

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This commit is contained in:
Wolfgang Denk 2007-11-01 22:54:31 +01:00
commit 2fa0dd158c
11 changed files with 89 additions and 57 deletions
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14
board/dbau1x00/u-boot.lds
View File

@ -43,14 +43,14 @@ SECTIONS
. = ALIGN(4);
.data : { *(.data) }
. = ALIGN(4);
.sdata : { *(.sdata) }
. = .;
_gp = ALIGN(16) + 0x7ff0;
_gp = ALIGN(16);
__got_start = .;
.got : { *(.got) }
__got_end = .;
.got : {
__got_start = .;
*(.got)
__got_end = .;
}
.sdata : { *(.sdata) }

14
board/gth2/u-boot.lds
View File

@ -43,14 +43,14 @@ SECTIONS
. = ALIGN(4);
.data : { *(.data) }
. = ALIGN(4);
.sdata : { *(.sdata) }
. = .;
_gp = ALIGN(16) + 0x7ff0;
_gp = ALIGN(16);
__got_start = .;
.got : { *(.got) }
__got_end = .;
.got : {
__got_start = .;
*(.got)
__got_end = .;
}
.sdata : { *(.sdata) }

14
board/incaip/u-boot.lds
View File

@ -43,14 +43,14 @@ SECTIONS
. = ALIGN(4);
.data : { *(.data) }
. = ALIGN(4);
.sdata : { *(.sdata) }
. = .;
_gp = ALIGN(16) + 0x7ff0;
_gp = ALIGN(16);
__got_start = .;
.got : { *(.got) }
__got_end = .;
.got : {
__got_start = .;
*(.got)
__got_end = .;
}
.sdata : { *(.sdata) }

14
board/pb1x00/u-boot.lds
View File

@ -43,14 +43,14 @@ SECTIONS
. = ALIGN(4);
.data : { *(.data) }
. = ALIGN(4);
.sdata : { *(.sdata) }
. = .;
_gp = ALIGN(16) + 0x7ff0;
_gp = ALIGN(16);
__got_start = .;
.got : { *(.got) }
__got_end = .;
.got : {
__got_start = .;
*(.got)
__got_end = .;
}
.sdata : { *(.sdata) }

14
board/purple/u-boot.lds
View File

@ -53,14 +53,14 @@ SECTIONS
. = ALIGN(4);
.data : { *(.data) }
. = ALIGN(4);
.sdata : { *(.sdata) }
. = .;
_gp = ALIGN(16) + 0x7ff0;
_gp = ALIGN(16);
__got_start = .;
.got : { *(.got) }
__got_end = .;
.got : {
__got_start = .;
*(.got)
__got_end = .;
}
.sdata : { *(.sdata) }

14
board/tb0229/u-boot.lds
View File

@ -43,14 +43,14 @@ SECTIONS
. = ALIGN(4);
.data : { *(.data) }
. = ALIGN(4);
.sdata : { *(.sdata) }
. = .;
_gp = ALIGN(16) + 0x7ff0;
_gp = ALIGN(16);
__got_start = .;
.got : { *(.got) }
__got_end = .;
.got : {
__got_start = .;
*(.got)
__got_end = .;
}
.sdata : { *(.sdata) }

2
cpu/mips/config.mk
View File

@ -35,6 +35,6 @@ else
ENDIANNESS = -EB
endif
MIPSFLAGS += $(ENDIANNESS) -mabicalls
MIPSFLAGS += $(ENDIANNESS)
PLATFORM_CPPFLAGS += $(MIPSFLAGS)

19
cpu/mips/start.S
View File

@ -234,11 +234,11 @@ reset:
li t0, CONF_CM_UNCACHED
mtc0 t0, CP0_CONFIG
/* Initialize GOT pointer.
/* Initialize $gp.
*/
bal 1f
nop
.word _GLOBAL_OFFSET_TABLE_
.word _gp
1:
move gp, ra
lw t1, 0(ra)
@ -306,9 +306,9 @@ relocate_code:
move t1, a2
/*
* Fix GOT pointer:
* Fix $gp:
*
* New GOT-PTR = (old GOT-PTR - CFG_MONITOR_BASE) + Destination Address
* New $gp = (Old $gp - CFG_MONITOR_BASE) + Destination Address
*/
move t6, gp
sub gp, CFG_MONITOR_BASE
@ -341,15 +341,22 @@ relocate_code:
j t0
nop
.gpword _GLOBAL_OFFSET_TABLE_ /* _GLOBAL_OFFSET_TABLE_ - _gp */
.word uboot_end_data
.word uboot_end
.word num_got_entries
in_ram:
/* Now we want to update GOT.
/*
* Now we want to update GOT.
*
* GOT[0] is reserved. GOT[1] is also reserved for the dynamic object
* generated by GNU ld. Skip these reserved entries from relocation.
*/
lw t3, -4(t0) /* t3 <-- num_got_entries */
addi t4, gp, 8 /* Skipping first two entries. */
lw t4, -16(t0) /* t4 <-- (_GLOBAL_OFFSET_TABLE_ - _gp) */
add t4, t4, gp /* t4 now holds _GLOBAL_OFFSET_TABLE_ */
addi t4, t4, 8 /* Skipping first two entries. */
li t2, 2
1:
lw t1, 0(t4)

14
examples/mips.lds
View File

@ -39,14 +39,14 @@ SECTIONS
. = ALIGN(4);
.data : { *(.data) }
. = ALIGN(4);
.sdata : { *(.sdata) }
. = .;
_gp = ALIGN(16) + 0x7ff0;
_gp = ALIGN(16);
__got_start = .;
.got : { *(.got) }
__got_end = .;
.got : {
__got_start = .;
*(.got)
__got_end = .;
}
.sdata : { *(.sdata) }

2
include/asm-mips/addrspace.h
View File

@ -49,7 +49,7 @@
cannot access physical memory directly from core */
#define UNCACHED_SDRAM(a) (((unsigned long)(a)) | 0x20000000)
#else /* !CONFIG_AU1X00 */
#define UNCACHED_SDRAM(a) PHYSADDR(a)
#define UNCACHED_SDRAM(a) KSEG1ADDR(a)
#endif /* CONFIG_AU1X00 */
#endif /* __ASSEMBLY__ */
/*

25
mips_config.mk
View File

@ -22,3 +22,28 @@
#
PLATFORM_CPPFLAGS += -DCONFIG_MIPS -D__MIPS__
#
# From Linux arch/mips/Makefile
#
# GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel
# code since it only slows down the whole thing. At some point we might make
# use of global pointer optimizations but their use of $28 conflicts with
# the current pointer optimization.
#
# The DECStation requires an ECOFF kernel for remote booting, other MIPS
# machines may also. Since BFD is incredibly buggy with respect to
# crossformat linking we rely on the elf2ecoff tool for format conversion.
#
# cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
# cflags-y += -msoft-float
# LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
# MODFLAGS += -mlong-calls
#
#
# Meanwhile, U-Boot rely on PIC. We add proper switches explicitly.
#
PLATFORM_CPPFLAGS += -G 0 -mabicalls -fpic -pipe
PLATFORM_CPPFLAGS += -msoft-float
PLATFORM_LDFLAGS += -G 0 -static -n -nostdlib