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| author | Mike Frysinger <vapier@gentoo.org> | 2008-06-01 01:21:34 -0400 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2009-01-28 13:26:14 -0500 |
| commit | dc2bfb0b58d7462b9eba68f3ae38e38cada0ad33 (patch) | |
| tree | f3c526025260131bd4332d5bb90bb0ef69ca26f7 /cpu/blackfin/start.S | |
| parent | 362c943347364e9373af4c5530778491ab56ec2e (diff) | |
| download | u-boot-imx-dc2bfb0b58d7462b9eba68f3ae38e38cada0ad33.zip u-boot-imx-dc2bfb0b58d7462b9eba68f3ae38e38cada0ad33.tar.gz u-boot-imx-dc2bfb0b58d7462b9eba68f3ae38e38cada0ad33.tar.bz2 | |
Blackfin: use common memcpy routine during init
Rather than using a local custom memcpy function, just call the existing
optimized Blackfin version.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'cpu/blackfin/start.S')
| -rw-r--r-- | cpu/blackfin/start.S | 32 |
1 files changed, 11 insertions, 21 deletions
diff --git a/cpu/blackfin/start.S b/cpu/blackfin/start.S index 9975a0c..6c5fef7 100644 --- a/cpu/blackfin/start.S +++ b/cpu/blackfin/start.S @@ -125,8 +125,9 @@ ENTRY(_start) */ r6 = 1 (x); - /* Relocate from wherever are (FLASH/RAM/etc...) to the - * hardcoded monitor location in the end of RAM. + /* Relocate from wherever are (FLASH/RAM/etc...) to the hardcoded + * monitor location in the end of RAM. We know that memcpy() only + * uses registers, so it is safe to call here. */ serial_early_puts("Relocate"); call _get_pc; @@ -135,27 +136,16 @@ ENTRY(_start) r2.h = .Loffset; r3.l = _start; r3.h = _start; - r1 = r2 - r3; - - r0 = r0 - r1; - - cc = r0 == r3; + r2 = r2 - r3; + r1 = r0 - r2; + cc = r1 == r3; if cc jump .Lnorelocate; - r6 = 0 (x); - p1 = r0; - - p2.l = LO(CONFIG_SYS_MONITOR_BASE); - p2.h = HI(CONFIG_SYS_MONITOR_BASE); - - p3 = 0x04; - p4.l = LO(CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN); - p4.h = HI(CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN); -.Lloop1: - r1 = [p1 ++ p3]; - [p2 ++ p3] = r1; - cc=p2==p4; - if !cc jump .Lloop1; + + r0 = r3; + r2.l = LO(CONFIG_SYS_MONITOR_LEN); + r2.h = HI(CONFIG_SYS_MONITOR_LEN); + call _memcpy_ASM; /* Initialize BSS section ... we know that memset() does not * use the BSS, so it is safe to call here. The bootrom LDR |