Add support for -prom-env command line options

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6129 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
blueswir1 2008-12-24 20:26:14 +00:00
parent 992e5acd4d
commit 95efd11c12
4 changed files with 46 additions and 23 deletions

View file

@ -23,6 +23,8 @@
* THE SOFTWARE.
*/
#include "hw.h"
#include "firmware_abi.h"
#include "sysemu.h"
#include "ppc_mac.h"
/* debug NVR */
@ -122,26 +124,35 @@ void macio_nvram_map (void *opaque, target_phys_addr_t mem_base)
cpu_register_physical_memory(mem_base, s->size, s->mem_index);
}
static uint8_t nvram_chksum (const uint8_t *buf, int n)
{
int sum, i;
sum = 0;
for(i = 0; i < n; i++)
sum += buf[i];
return (sum & 0xff) + (sum >> 8);
}
/* set a free Mac OS NVRAM partition */
/* Set up a system OpenBIOS NVRAM partition */
void pmac_format_nvram_partition (MacIONVRAMState *nvr, int len)
{
uint8_t *buf;
char partition_name[12] = "wwwwwwwwwwww";
unsigned int i;
uint32_t start = 0, end;
struct OpenBIOS_nvpart_v1 *part_header;
buf = nvr->data;
buf[0] = 0x7f; /* free partition magic */
buf[1] = 0; /* checksum */
buf[2] = len >> 8;
buf[3] = len;
memcpy(buf + 4, partition_name, 12);
buf[1] = nvram_chksum(buf, 16);
// OpenBIOS nvram variables
// Variable partition
part_header = (struct OpenBIOS_nvpart_v1 *)nvr->data;
part_header->signature = OPENBIOS_PART_SYSTEM;
pstrcpy(part_header->name, sizeof(part_header->name), "system");
end = start + sizeof(struct OpenBIOS_nvpart_v1);
for (i = 0; i < nb_prom_envs; i++)
end = OpenBIOS_set_var(nvr->data, end, prom_envs[i]);
// End marker
nvr->data[end++] = '\0';
end = start + ((end - start + 15) & ~15);
OpenBIOS_finish_partition(part_header, end - start);
// free partition
start = end;
part_header = (struct OpenBIOS_nvpart_v1 *)&nvr->data[start];
part_header->signature = OPENBIOS_PART_FREE;
pstrcpy(part_header->name, sizeof(part_header->name), "free");
end = len;
OpenBIOS_finish_partition(part_header, end - start);
}