From 7c0d4a7508d252d2d7c137eeb376814132dda30f Mon Sep 17 00:00:00 2001 From: Kumar Gala Date: Mon, 22 Sep 2008 14:11:11 -0500 Subject: 85xx: Improve flash remapping on MPC8572DS & MPC8536DS Changing the flash from cacheable to cache-inhibited was taking a significant amount of time due to the fact that we were iterating over the full 256M of flash. Instead we can just flush the L1 d-cache and invalidate the i-cache. Signed-off-by: Kumar Gala --- board/freescale/mpc8536ds/mpc8536ds.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) (limited to 'board/freescale/mpc8536ds/mpc8536ds.c') diff --git a/board/freescale/mpc8536ds/mpc8536ds.c b/board/freescale/mpc8536ds/mpc8536ds.c index f634e17..5b252d1 100644 --- a/board/freescale/mpc8536ds/mpc8536ds.c +++ b/board/freescale/mpc8536ds/mpc8536ds.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #include #include @@ -441,7 +442,6 @@ pci_init_board(void) int board_early_init_r(void) { - unsigned int i; const unsigned int flashbase = CONFIG_SYS_FLASH_BASE; const u8 flash_esel = 1; @@ -450,11 +450,9 @@ int board_early_init_r(void) * so that flash can be erased properly. */ - /* Invalidate any remaining lines of the flash from caches. */ - for (i = 0; i < 256*1024*1024; i+=32) { - asm volatile ("dcbi %0,%1": : "b" (flashbase), "r" (i)); - asm volatile ("icbi %0,%1": : "b" (flashbase), "r" (i)); - } + /* Flush d-cache and invalidate i-cache of any FLASH data */ + flush_dcache(); + invalidate_icache(); /* invalidate existing TLB entry for flash + promjet */ disable_tlb(flash_esel); -- cgit v1.1