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Use different MACs for the host and for the device ends of usb link

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This makes Qi consistent with current SHR boot script. It assigns
the MAC specified on the identity partition to the device and the
next address to the host, ie: from "g_ether.dev_addr=00:1F:11:01:58:67"
generate "g_ether.host_addr=00:1F:11:01:58:68".

Signed-off-by: Paul Fertser <fercerpav@gmail.com>
This commit is contained in:
Paul Fertser 2009-05-28 20:01:20 -03:00 committed by Nelson Castillo
parent 8089e8de8b
commit 141b2bedfc
1 changed files with 26 additions and 2 deletions
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28
qiboot/src/cpu/s3c2442/gta02.c
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@ -558,6 +558,22 @@ void post_serial_init_gta02(void)
puts("BATTERY CONDITION LOW\n");
}
/*
* Increment a hexadecimal digit represented by a char and
* return 1 if an overflow occured.
*/
static char inc_hexchar(char * p)
{
if (*p == '9')
*p = 'A';
else if (*p != 'F')
(*p)++;
else {
*p = '0';
return 1;
}
return 0;
}
/*
* create and append device-specific Linux kernel commandline
@ -569,6 +585,7 @@ void post_serial_init_gta02(void)
char * append_device_specific_cmdline_gta02(char * cmdline)
{
int n = 0;
int i;
int len;
static char mac[64];
struct kernel_source const * real_kernel = this_kernel;
@ -632,10 +649,17 @@ char * append_device_specific_cmdline_gta02(char * cmdline)
mac[len] = '\0';
cmdline += strlen(strcpy(cmdline, " g_ether.host_addr="));
cmdline += strlen(strcpy(cmdline, " g_ether.dev_addr="));
cmdline += strlen(strcpy(cmdline, &mac[2]));
cmdline += strlen(strcpy(cmdline, " g_ether.dev_addr="));
for (i = 0; i != 10; i++) {
if ((i % 3) == 2)
continue;
if (!inc_hexchar(mac + 18 - i))
break; /* Carry not needed. */
}
cmdline += strlen(strcpy(cmdline, " g_ether.host_addr="));
cmdline += strlen(strcpy(cmdline, &mac[2]));
*cmdline++ = ' ' ;
bail: