From 1da104647dc2828a6594bdc7b5ae119923dbcffa Mon Sep 17 00:00:00 2001 From: Patrick Georgi Date: Fri, 28 Oct 2011 20:28:03 +0200 Subject: Get rid of AUTO_XIP_ROM_BASE That value is now generated from a code address and CONFIG_XIP_ROM_SIZE. This works as MTRRs are fully specified by their size and any address within the range. Change-Id: Id35d34eaf3be37f59cd2a968e3327d333ba71a34 Signed-off-by: Patrick Georgi Reviewed-on: http://review.coreboot.org/348 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer --- src/cpu/x86/mtrr/earlymtrr.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'src/cpu/x86') diff --git a/src/cpu/x86/mtrr/earlymtrr.c b/src/cpu/x86/mtrr/earlymtrr.c index dcfcccd0f3..f8119d3e59 100644 --- a/src/cpu/x86/mtrr/earlymtrr.c +++ b/src/cpu/x86/mtrr/earlymtrr.c @@ -29,6 +29,8 @@ static void cache_lbmem(int type) enable_cache(); } +const int addr_det = 0; + /* the fixed and variable MTTRs are power-up with random values, * clear them to MTRR_TYPE_UNCACHEABLE for safty. */ @@ -52,8 +54,11 @@ static void do_early_mtrr_init(const unsigned long *mtrr_msrs) #if defined(CONFIG_XIP_ROM_SIZE) /* enable write through caching so we can do execute in place * on the flash rom. + * Determine address by calculating the XIP_ROM_SIZE sized area with + * XIP_ROM_SIZE alignment that contains the global variable defined above; */ - set_var_mtrr(1, REAL_XIP_ROM_BASE, CONFIG_XIP_ROM_SIZE, MTRR_TYPE_WRBACK); + unsigned long f = (unsigned long)&addr_det & ~(CONFIG_XIP_ROM_SIZE - 1); + set_var_mtrr(1, f, CONFIG_XIP_ROM_SIZE, MTRR_TYPE_WRBACK); #endif /* Set the default memory type and enable fixed and variable MTRRs -- cgit v1.2.3