diff options
| -rw-r--r-- | src/cpu/x86/mtrr/mtrr.c | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/src/cpu/x86/mtrr/mtrr.c b/src/cpu/x86/mtrr/mtrr.c index d8903b89e0af..d1098d988f29 100644 --- a/src/cpu/x86/mtrr/mtrr.c +++ b/src/cpu/x86/mtrr/mtrr.c @@ -9,6 +9,7 @@ */ #include <stddef.h> +#include <stdint.h> #include <string.h> #include <bootstate.h> #include <commonlib/helpers.h> @@ -873,6 +874,28 @@ void mtrr_use_temp_range(uintptr_t begin, size_t size, int type) struct memranges addr_space; const int above4gb = 1; /* Cover above 4GiB by default. */ int address_bits; + static struct temp_range { + uintptr_t begin; + size_t size; + int type; + } temp_ranges[10]; + + if (size == 0) + return; + + int i; + for (i = 0; i < ARRAY_SIZE(temp_ranges); i++) { + if (temp_ranges[i].size == 0) { + temp_ranges[i].begin = begin; + temp_ranges[i].size = size; + temp_ranges[i].type = type; + break; + } + } + if (i == ARRAY_SIZE(temp_ranges)) { + printk(BIOS_ERR, "Out of temporary ranges for MTRR use\n"); + return; + } /* Make a copy of the original address space and tweak it with the * provided range. */ @@ -891,7 +914,11 @@ void mtrr_use_temp_range(uintptr_t begin, size_t size, int type) } /* Place new range into the address space. */ - memranges_insert(&addr_space, begin, size, type); + for (i = 0; i < ARRAY_SIZE(temp_ranges); i++) { + if (temp_ranges[i].size != 0) + memranges_insert(&addr_space, temp_ranges[i].begin, + temp_ranges[i].size, temp_ranges[i].type); + } print_physical_address_space(&addr_space, "TEMPORARY"); |