diff options
| author | Patrick Georgi <patrick@georgi-clan.de> | 2011-10-28 20:28:03 +0200 |
|---|---|---|
| committer | Stefan Reinauer <stefan.reinauer@coreboot.org> | 2011-10-28 22:17:10 +0200 |
| commit | 1da104647dc2828a6594bdc7b5ae119923dbcffa (patch) | |
| tree | 3e4d1e8acc0e37bf0f5d93c4367d072c1629755b /src/cpu/x86/mtrr | |
| parent | 0f8590f9ca8026af62efa510a1c717d2d0729e3d (diff) | |
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 <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/348
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/cpu/x86/mtrr')
| -rw-r--r-- | src/cpu/x86/mtrr/earlymtrr.c | 7 |
1 files changed, 6 insertions, 1 deletions
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 |