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https://github.com/xemu-project/xemu.git
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Set OpenBIOS variables in NVRAM
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2764 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
blueswir1
parent
9467cd4602
commit
66508601ad
61
hw/sun4m.c
61
hw/sun4m.c
@ -117,6 +117,34 @@ static void nvram_set_string (m48t59_t *nvram, uint32_t addr,
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m48t59_write(nvram, addr + max - 1, '\0');
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}
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static uint32_t nvram_set_var (m48t59_t *nvram, uint32_t addr,
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const unsigned char *str)
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{
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uint32_t len;
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len = strlen(str) + 1;
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nvram_set_string(nvram, addr, str, len);
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return addr + len;
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}
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static void nvram_finish_partition (m48t59_t *nvram, uint32_t start,
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uint32_t end)
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{
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unsigned int i, sum;
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// Length divided by 16
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m48t59_write(nvram, start + 2, ((end - start) >> 12) & 0xff);
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m48t59_write(nvram, start + 3, ((end - start) >> 4) & 0xff);
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// Checksum
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sum = m48t59_read(nvram, start);
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for (i = 0; i < 14; i++) {
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sum += m48t59_read(nvram, start + 2 + i);
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sum = (sum + ((sum & 0xff00) >> 8)) & 0xff;
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}
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m48t59_write(nvram, start + 1, sum & 0xff);
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}
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static m48t59_t *nvram;
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extern int nographic;
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@ -128,7 +156,8 @@ static void nvram_init(m48t59_t *nvram, uint8_t *macaddr, const char *cmdline,
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int machine_id)
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{
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unsigned char tmp = 0;
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int i, j;
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unsigned int i, j;
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uint32_t start, end;
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// Try to match PPC NVRAM
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nvram_set_string(nvram, 0x00, "QEMU_BIOS", 16);
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@ -151,8 +180,30 @@ static void nvram_init(m48t59_t *nvram, uint8_t *macaddr, const char *cmdline,
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nvram_set_word(nvram, 0x56, height);
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nvram_set_word(nvram, 0x58, depth);
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// OpenBIOS nvram variables
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// Variable partition
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start = 252;
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m48t59_write(nvram, start, 0x70);
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nvram_set_string(nvram, start + 4, "system", 12);
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end = start + 16;
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for (i = 0; i < nb_prom_envs; i++)
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end = nvram_set_var(nvram, end, prom_envs[i]);
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m48t59_write(nvram, end++ , 0);
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end = start + ((end - start + 15) & ~15);
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nvram_finish_partition(nvram, start, end);
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// free partition
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start = end;
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m48t59_write(nvram, start, 0x7f);
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nvram_set_string(nvram, start + 4, "free", 12);
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end = 0x1fd0;
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nvram_finish_partition(nvram, start, end);
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// Sun4m specific use
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i = 0x1fd8;
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start = i = 0x1fd8;
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m48t59_write(nvram, i++, 0x01);
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m48t59_write(nvram, i++, machine_id);
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j = 0;
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@ -164,10 +215,10 @@ static void nvram_init(m48t59_t *nvram, uint8_t *macaddr, const char *cmdline,
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m48t59_write(nvram, i, macaddr[j]);
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/* Calculate checksum */
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for (i = 0x1fd8; i < 0x1fe7; i++) {
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tmp ^= m48t59_read(nvram, i);
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for (i = start; i < start + 15; i++) {
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tmp ^= m48t59_read(nvram, i);
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}
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m48t59_write(nvram, 0x1fe7, tmp);
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m48t59_write(nvram, start + 15, tmp);
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}
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static void *slavio_intctl;
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52
hw/sun4u.c
52
hw/sun4u.c
@ -170,6 +170,34 @@ uint16_t NVRAM_compute_crc (m48t59_t *nvram, uint32_t start, uint32_t count)
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return crc;
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}
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static uint32_t nvram_set_var (m48t59_t *nvram, uint32_t addr,
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const unsigned char *str)
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{
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uint32_t len;
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len = strlen(str) + 1;
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NVRAM_set_string(nvram, addr, str, len);
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return addr + len;
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}
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static void nvram_finish_partition (m48t59_t *nvram, uint32_t start,
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uint32_t end)
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{
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unsigned int i, sum;
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// Length divided by 16
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m48t59_write(nvram, start + 2, ((end - start) >> 12) & 0xff);
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m48t59_write(nvram, start + 3, ((end - start) >> 4) & 0xff);
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// Checksum
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sum = m48t59_read(nvram, start);
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for (i = 0; i < 14; i++) {
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sum += m48t59_read(nvram, start + 2 + i);
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sum = (sum + ((sum & 0xff00) >> 8)) & 0xff;
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}
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m48t59_write(nvram, start + 1, sum & 0xff);
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}
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extern int nographic;
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int sun4u_NVRAM_set_params (m48t59_t *nvram, uint16_t NVRAM_size,
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@ -182,6 +210,8 @@ int sun4u_NVRAM_set_params (m48t59_t *nvram, uint16_t NVRAM_size,
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int width, int height, int depth)
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{
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uint16_t crc;
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unsigned int i;
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uint32_t start, end;
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/* Set parameters for Open Hack'Ware BIOS */
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NVRAM_set_string(nvram, 0x00, "QEMU_BIOS", 16);
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@ -212,6 +242,28 @@ int sun4u_NVRAM_set_params (m48t59_t *nvram, uint16_t NVRAM_size,
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crc = NVRAM_compute_crc(nvram, 0x00, 0xF8);
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NVRAM_set_word(nvram, 0xFC, crc);
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// OpenBIOS nvram variables
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// Variable partition
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start = 252;
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m48t59_write(nvram, start, 0x70);
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NVRAM_set_string(nvram, start + 4, "system", 12);
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end = start + 16;
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for (i = 0; i < nb_prom_envs; i++)
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end = nvram_set_var(nvram, end, prom_envs[i]);
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m48t59_write(nvram, end++ , 0);
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end = start + ((end - start + 15) & ~15);
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nvram_finish_partition(nvram, start, end);
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// free partition
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start = end;
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m48t59_write(nvram, start, 0x7f);
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NVRAM_set_string(nvram, start + 4, "free", 12);
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end = 0x1fd0;
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nvram_finish_partition(nvram, start, end);
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return 0;
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}
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@ -1661,6 +1661,15 @@ The following options are specific to the Sparc emulation:
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Set the initial TCX graphic mode. The default is 1024x768.
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@item -prom-env string
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Set OpenBIOS variables in NVRAM, for example:
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@example
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qemu-system-sparc -prom-env 'auto-boot?=false' \
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-prom-env 'boot-device=sd(0,2,0):d' -prom-env 'boot-args=linux single'
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@end example
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@end table
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@c man end
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21
vl.c
21
vl.c
@ -197,6 +197,10 @@ int nb_option_roms;
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int semihosting_enabled = 0;
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int autostart = 1;
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const char *qemu_name;
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#ifdef TARGET_SPARC
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unsigned int nb_prom_envs = 0;
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const char *prom_envs[MAX_PROM_ENVS];
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#endif
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/***********************************************************/
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/* x86 ISA bus support */
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@ -6530,6 +6534,9 @@ void help(void)
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"-daemonize daemonize QEMU after initializing\n"
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#endif
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"-option-rom rom load a file, rom, into the option ROM space\n"
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#ifdef TARGET_SPARC
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"-prom-env variable=value set OpenBIOS nvram variables\n"
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#endif
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"\n"
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"During emulation, the following keys are useful:\n"
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"ctrl-alt-f toggle full screen\n"
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@ -6624,6 +6631,7 @@ enum {
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QEMU_OPTION_option_rom,
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QEMU_OPTION_semihosting,
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QEMU_OPTION_name,
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QEMU_OPTION_prom_env,
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};
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typedef struct QEMUOption {
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@ -6721,6 +6729,9 @@ const QEMUOption qemu_options[] = {
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{ "semihosting", 0, QEMU_OPTION_semihosting },
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#endif
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{ "name", HAS_ARG, QEMU_OPTION_name },
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#if defined(TARGET_SPARC)
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{ "prom-env", HAS_ARG, QEMU_OPTION_prom_env },
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#endif
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{ NULL },
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};
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@ -7478,6 +7489,16 @@ int main(int argc, char **argv)
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case QEMU_OPTION_name:
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qemu_name = optarg;
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break;
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#ifdef TARGET_SPARC
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case QEMU_OPTION_prom_env:
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if (nb_prom_envs >= MAX_PROM_ENVS) {
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fprintf(stderr, "Too many prom variables\n");
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exit(1);
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}
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prom_envs[nb_prom_envs] = optarg;
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nb_prom_envs++;
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break;
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#endif
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}
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}
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}
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6
vl.h
6
vl.h
@ -169,6 +169,12 @@ extern const char *bootp_filename;
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extern const char *option_rom[MAX_OPTION_ROMS];
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extern int nb_option_roms;
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#ifdef TARGET_SPARC
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#define MAX_PROM_ENVS 128
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extern const char *prom_envs[MAX_PROM_ENVS];
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extern unsigned int nb_prom_envs;
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#endif
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/* XXX: make it dynamic */
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#define MAX_BIOS_SIZE (4 * 1024 * 1024)
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#if defined (TARGET_PPC) || defined (TARGET_SPARC64)
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