diff options
| author | Sascha Hauer <s.hauer@pengutronix.de> | 2013-03-04 16:58:58 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2013-03-04 17:00:23 +0100 |
| commit | b7451329b5d2db6bb9d7cd13a29fcaeb1ac9c180 (patch) | |
| tree | 014c6b16512690a327b110676d7794fdaec51767 /arch/arm/mach-omap/auxcr.S | |
| parent | 94e71b843f6456abacc2fe76a5c375a461fabdf7 (diff) | |
| download | barebox-b7451329b5d2db6bb9d7cd13a29fcaeb1ac9c180.tar.gz barebox-b7451329b5d2db6bb9d7cd13a29fcaeb1ac9c180.tar.xz | |
ARM: OMAP3: invalidate L2 cache using ROM API
Code taken from U-Boot. This makes the beagle board much more
reliable.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-omap/auxcr.S')
| -rw-r--r-- | arch/arm/mach-omap/auxcr.S | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm/mach-omap/auxcr.S b/arch/arm/mach-omap/auxcr.S index 2debc15bd6..aaac0f2130 100644 --- a/arch/arm/mach-omap/auxcr.S +++ b/arch/arm/mach-omap/auxcr.S @@ -31,3 +31,15 @@ ENTRY(setup_auxcr) .word 0xE1600070 @ SMC bx lr ENDPROC(setup_auxcr) + +.arm +ENTRY(omap3_gp_romcode_call) + push {r4-r12, lr} @ Save all registers from ROM code! + mov r12, r0 @ Copy the Service ID in R12 + mov r0, r1 @ Copy parameter to R0 + mcr p15, 0, r0, c7, c10, 4 @ DSB + mcr p15, 0, r0, c7, c10, 5 @ DMB + .word 0xe1600070 @ SMC #0 to enter monitor - hand assembled + @ because we use -march=armv5 + pop {r4-r12, pc} +ENDPROC(omap3_gp_romcode_call) |