Soeren Sonnenburg wrote:
> On Tue, 2007-08-28 at 09:12 +0200, Giacomo Catenazzi wrote:
>> Soeren Sonnenburg wrote:
>>> Package: microcode.ctl
>>> Version: 1.17-3
>>> Severity: wishlist
>>>
>>> Rudolf Marek posted on June 21 a way to also extract core duo microcode
>>> updates, which fixes the infamous "Errata AE18 not fixed, update BIOS or
>>> microcode of the CPU!".
>> Could give me more info (links) about these microcodes?
>
> not really... as you can see the microcodes are extracted from ibm
> thinkpads bios updates ... errata AE18 is the temperature sensor not
> anymore working (important if you have a macbook* core one duo and as
> apple did/does not release firmware/bios updates to fix this it is
> necessary to get temperature monitoring workin) ...
>
> errate list is here:
> http://www.geek.com/images/geeknews/2006Jan/core_duo_errata__2006_01_21__full.gif
I don't understand why new intel microcodes doesn't include it.
I'll ask Intel, but for one of the next version I'll include
also a small utility to extract information from microcode,
to show CPU and microcode date.
I attach a "preliminary" version. I used this version to check
what wrong with microcodes (a strange microcode caused reject
of all updates, because of a kernel bug).
ciao
cate
/* */
#include <stdlib.h>
#include <stdio.h>
#define BUFFER_SIZE 4096
#define MICROCODE_SIZE (64*1024)
static
int check_microcode(const unsigned int microcode[], size_t len, const char title[]) {
unsigned int header = microcode[0];
unsigned int version = microcode[1];
unsigned int date = microcode[2];
unsigned int cpu = microcode[3];
unsigned int checksum = microcode[4];
unsigned int loader = microcode[5];
unsigned int flags = microcode[6];
unsigned int size = microcode[7];
unsigned int tot_size = microcode[8];
unsigned int cpu1 = cpu & 0xff;
unsigned int cpu2 = cpu >> 8u & 0xff;
unsigned int cpu3 = cpu >> 16u & 0xff;
unsigned int cpu4 = cpu >> 24u & 0xff;
unsigned int sum = 0;
size_t i;
if(size == 0)
size = 2000;
if(tot_size == 0)
tot_size = 48 + size;
printf("sec:%14s, header:%1u, loader:%1u, date: %08x, version:%4u, cpu:%8x, flag1:%08x, ",
title, header, loader, date, version, cpu, flags);
if(len*4 != tot_size || size < 2000 || tot_size < 2048) {
fprintf(stderr, "Size error: readed: %u, tot_size: %u, size: %u\n", len, tot_size, size);
return 1;
}
for(i=0; i<len; i++) {
sum += microcode[i];
}
if (sum == 0) {
printf("checksum ok!\n");
} else {
printf("checksum error\n");
}
}
static
int read_microcode(void) {
int line_no = 0;
char line_buffer[BUFFER_SIZE+1];
char title[16+1];
unsigned int microcode[MICROCODE_SIZE+1];
size_t pos = 0;
int scanned;
title[0]=0;
while(fgets(line_buffer, BUFFER_SIZE, stdin) != NULL) {
++line_no;
if (line_buffer[0] == 0) {
if (pos != 0)
check_microcode(microcode, pos, title);
continue;
}
if (line_buffer[0] == '/' && line_buffer[1] == '*') {
if (pos !=0)
check_microcode(microcode, pos, title);
pos = 0;
if ( sscanf(line_buffer, "/* %16s.inc ", title) != 1) {
title[0] = 0;
}
continue;
}
if (line_buffer[0] == '/')
continue;
scanned = sscanf(line_buffer, "%x, %x, %x, %x",
microcode + pos,
microcode + pos + 1,
microcode + pos + 2,
microcode + pos + 3);
if(scanned != 4) {
fprintf(stderr, "Invalid format at line %i\n", line_no);
return 1;
}
pos += 4;
}
}
int main() {
read_microcode();
return 0;
}
