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| author | Ron Madrid <ron_madrid@sbcglobal.net> | 2008-12-12 13:12:45 -0800 |
|---|---|---|
| committer | Kim Phillips <kim.phillips@freescale.com> | 2009-01-21 18:43:49 -0600 |
| commit | 455a46915b82896cc2070eb326d075555c2bc580 (patch) | |
| tree | bc99b7d7d606855a04c2258dacbe9aae86a09a49 /cpu/mpc83xx/start.S | |
| parent | be4880ebe4355e8782be4af4b337a1b98dffcbe3 (diff) | |
| download | u-boot-imx-455a46915b82896cc2070eb326d075555c2bc580.zip u-boot-imx-455a46915b82896cc2070eb326d075555c2bc580.tar.gz u-boot-imx-455a46915b82896cc2070eb326d075555c2bc580.tar.bz2 | |
mpc83xx: Size optimization of start.S
Currently there are in excess of 100 bytes located at the beginning of the image
built by start.S that are not being utilized. This patch moves a few functions
into this part of the image. This will create a greater number of *available*
bytes that can be used by board specific code in NAND builds and will decrease
the size of the assembled code in other builds.
Signed-off-by: Ron Madrid <ron_madrid@sbcglobal.net>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Diffstat (limited to 'cpu/mpc83xx/start.S')
| -rw-r--r-- | cpu/mpc83xx/start.S | 77 |
1 files changed, 39 insertions, 38 deletions
diff --git a/cpu/mpc83xx/start.S b/cpu/mpc83xx/start.S index 792b2c8..beebc99 100644 --- a/cpu/mpc83xx/start.S +++ b/cpu/mpc83xx/start.S @@ -109,6 +109,45 @@ version_string: .ascii " (", U_BOOT_DATE, " - ", U_BOOT_TIME, ")" .ascii " ", CONFIG_IDENT_STRING, "\0" + .align 2 + + .globl enable_addr_trans +enable_addr_trans: + /* enable address translation */ + mfmsr r5 + ori r5, r5, (MSR_IR | MSR_DR) + mtmsr r5 + isync + blr + + .globl disable_addr_trans +disable_addr_trans: + /* disable address translation */ + mflr r4 + mfmsr r3 + andi. r0, r3, (MSR_IR | MSR_DR) + beqlr + andc r3, r3, r0 + mtspr SRR0, r4 + mtspr SRR1, r3 + rfi + + .globl get_pvr +get_pvr: + mfspr r3, PVR + blr + + .globl ppcDWstore +ppcDWstore: + lfd 1, 0(r4) + stfd 1, 0(r3) + blr + + .globl ppcDWload +ppcDWload: + lfd 1, 0(r3) + stfd 1, 0(r4) + blr #ifndef CONFIG_DEFAULT_IMMR #error CONFIG_DEFAULT_IMMR must be defined @@ -698,27 +737,6 @@ setup_bats: blr - .globl enable_addr_trans -enable_addr_trans: - /* enable address translation */ - mfmsr r5 - ori r5, r5, (MSR_IR | MSR_DR) - mtmsr r5 - isync - blr - - .globl disable_addr_trans -disable_addr_trans: - /* disable address translation */ - mflr r4 - mfmsr r3 - andi. r0, r3, (MSR_IR | MSR_DR) - beqlr - andc r3, r3, r0 - mtspr SRR0, r4 - mtspr SRR1, r3 - rfi - /* Cache functions. * * Note: requires that all cache bits in @@ -796,23 +814,6 @@ flush_dcache: b 1b 2: blr - .globl get_pvr -get_pvr: - mfspr r3, PVR - blr - - .globl ppcDWstore -ppcDWstore: - lfd 1, 0(r4) - stfd 1, 0(r3) - blr - - .globl ppcDWload -ppcDWload: - lfd 1, 0(r3) - stfd 1, 0(r4) - blr - /*-------------------------------------------------------------------*/ /* |