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remaining fixes for log2. Simple prototype added to spd_ddr2.h

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Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>


git-svn-id: svn://coreboot.org/repository/coreboot-v3@853 f3766cd6-281f-0410-b1cd-43a5c92072e9
This commit is contained in:
Ronald G. Minnich 2008-08-31 20:39:48 +00:00
parent 3b384ce2a2
commit c24361eba7
3 changed files with 12 additions and 3 deletions
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4
device/device.c
View file

@ -446,10 +446,10 @@ void compute_allocate_resource(struct bus *bus, struct resource *bridge,
* resource type specific.
*/
if (bridge->flags & IORESOURCE_IO) {
min_align = log2(DEVICE_IO_ALIGN);
min_align = log2c(DEVICE_IO_ALIGN);
}
if (bridge->flags & IORESOURCE_MEM) {
min_align = log2(DEVICE_MEM_ALIGN);
min_align = log2c(DEVICE_MEM_ALIGN);
}
/* Make certain we have read in all of the resources. */

8
include/lib.h
View file

@ -28,7 +28,13 @@
*/
#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
int log2(unsigned int n);
/* you have to explicity pick logc2 (ceiling) or log2f (floor)
* it is a no-op if you KNOW that your number is a power of 2.
* It is important to know what you are doing otherwise.
* example: log2c(72) is 7, log2f(72) is 6!
*/
int log2c(unsigned int n);
int log2f(unsigned int n);
void udelay(unsigned int usecs);
void mdelay(unsigned int msecs);

3
include/spd_ddr2.h
View file

@ -86,3 +86,6 @@
#define SPD_TRFC 42 /* add byte 0x40 bit [6:4] , so final val42+ table[((val40>>4) & 0x7)] + (val40 & 1)*256*/
#define SPD_TREF 12
/* prototypes for dealing with spd */
u8 spd_read_byte(u16 device, u8 address);