diff options
Diffstat (limited to 'src/cpu/x86/mtrr/earlymtrr.c')
| -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 |