haraldwolff/qemu-patch-raspberry4
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Add support for -prom-env command line options

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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
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49
hw/mac_nvram.c
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);
}

12
qemu-doc.texi
View file

@ -2343,6 +2343,18 @@ The following options are specific to the PowerPC emulation:
Set the initial VGA graphic mode. The default is 800x600x15.
@item -prom-env string
Set OpenBIOS variables in NVRAM, for example:
@example
qemu-system-ppc -prom-env 'auto-boot?=false' \
-prom-env 'boot-device=hd:2,\yaboot' \
-prom-env 'boot-args=conf=hd:2,\yaboot.conf'
@end example
These variables are not used by Open Hack'Ware.
@end table
@c man end

2
sysemu.h
View file

@ -108,7 +108,7 @@ extern int kqemu_allowed;
extern const char *option_rom[MAX_OPTION_ROMS];
extern int nb_option_roms;
#ifdef TARGET_SPARC
#if defined(TARGET_SPARC) || defined(TARGET_PPC)
#define MAX_PROM_ENVS 128
extern const char *prom_envs[MAX_PROM_ENVS];
extern unsigned int nb_prom_envs;

6
vl.c
View file

@ -231,7 +231,7 @@ int old_param = 0;
#endif
const char *qemu_name;
int alt_grab = 0;
#ifdef TARGET_SPARC
#if defined(TARGET_SPARC) || defined(TARGET_PPC)
unsigned int nb_prom_envs = 0;
const char *prom_envs[MAX_PROM_ENVS];
#endif
@ -4185,7 +4185,7 @@ static const QEMUOption qemu_options[] = {
{ "semihosting", 0, QEMU_OPTION_semihosting },
#endif
{ "name", HAS_ARG, QEMU_OPTION_name },
#if defined(TARGET_SPARC)
#if defined(TARGET_SPARC) || defined(TARGET_PPC)
{ "prom-env", HAS_ARG, QEMU_OPTION_prom_env },
#endif
#if defined(TARGET_ARM)
@ -5049,7 +5049,7 @@ int main(int argc, char **argv, char **envp)
case QEMU_OPTION_name:
qemu_name = optarg;
break;
#ifdef TARGET_SPARC
#if defined(TARGET_SPARC) || defined(TARGET_PPC)
case QEMU_OPTION_prom_env:
if (nb_prom_envs >= MAX_PROM_ENVS) {
fprintf(stderr, "Too many prom variables\n");