diff options
author | Yinghai Lu <yinghailu@gmail.com> | 2005-07-08 02:49:49 +0000 |
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committer | Yinghai Lu <yinghailu@gmail.com> | 2005-07-08 02:49:49 +0000 |
commit | 13f1c2af8be2cd7f7e99a678f5d428a65b771811 (patch) | |
tree | 27cad5581f1fa150f573149d48e82f70ba1b1d9f /src/lib/clog2.c | |
parent | 14cde9e96a777f9d75016a13b23fab0480515f58 (diff) |
eric patch
1. x86_setup_mtrr take address bit.
2. generic ht, pcix, pcie beidge...
3. scan bus and reset_bus
4. ht read ctrl to decide if the ht chain
is ready
5. Intel e7520 and e7525 support
6. new ich5r support
7. intel sb 6300 support.
yhlu patch
1. split x86_setup_mtrrs to fixed and var
2. if (resource->flags & IORESOURCE_FIXED ) return; in device.c pick_largest_resource
3. in_conherent.c K8_SCAN_PCI_BUS
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1982 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/lib/clog2.c')
-rw-r--r-- | src/lib/clog2.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/lib/clog2.c b/src/lib/clog2.c index 41e2af9791..b9b173177c 100644 --- a/src/lib/clog2.c +++ b/src/lib/clog2.c @@ -4,16 +4,19 @@ #include <console/console.h> #endif +/* Assume 8 bits per byte */ +#define CHAR_BIT 8 + unsigned long log2(unsigned long x) { // assume 8 bits per byte. - unsigned long i = 1 << (sizeof(x)*8 - 1); - unsigned long pow = sizeof(x) * 8 - 1; + unsigned long i = 1ULL << (sizeof(x)* CHAR_BIT - 1ULL); + unsigned long pow = sizeof(x) * CHAR_BIT - 1ULL; if (! x) { #ifdef DEBUG_LOG2 printk_warning("%s called with invalid parameter of 0\n", - __FUNCTION__); + __func__); #endif return -1; } |