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hw/hppa: Implement proper SeaBIOS version check 

It's important that the SeaBIOS hppa firmware is at least at a minimal
level to ensure proper interaction between qemu and firmware.

Implement a proper firmware version check by telling SeaBIOS via the
fw_cfg interface which minimal SeaBIOS version is required by this
running qemu instance. If the firmware detects that it's too old, it
will stop.

Signed-off-by: Helge Deller <deller@gmx.de>
This commit is contained in:
Helge Deller 2020-07-27 22:43:44 +02:00
parent 6d9c524da2
commit 28b71a2e42
1 changed files with 22 additions and 0 deletions
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22
hw/hppa/machine.c
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@ -25,6 +25,8 @@
#define MAX_IDE_BUS 2
#define MIN_SEABIOS_HPPA_VERSION 1 /* require at least this fw version */
static ISABus *hppa_isa_bus(void)
{
ISABus *isa_bus;
@ -56,6 +58,23 @@ static uint64_t cpu_hppa_to_phys(void *opaque, uint64_t addr)
static HPPACPU *cpu[HPPA_MAX_CPUS];
static uint64_t firmware_entry;
static FWCfgState *create_fw_cfg(MachineState *ms)
{
FWCfgState *fw_cfg;
uint64_t val;
fw_cfg = fw_cfg_init_mem(QEMU_FW_CFG_IO_BASE, QEMU_FW_CFG_IO_BASE + 4);
fw_cfg_add_i16(fw_cfg, FW_CFG_NB_CPUS, ms->smp.cpus);
fw_cfg_add_i16(fw_cfg, FW_CFG_MAX_CPUS, HPPA_MAX_CPUS);
fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, ram_size);
val = cpu_to_le64(MIN_SEABIOS_HPPA_VERSION);
fw_cfg_add_file(fw_cfg, "/etc/firmware-min-version",
g_memdup(&val, sizeof(val)), sizeof(val));
return fw_cfg;
}
static void machine_hppa_init(MachineState *machine)
{
const char *kernel_filename = machine->kernel_filename;
@ -118,6 +137,9 @@ static void machine_hppa_init(MachineState *machine)
115200, serial_hd(0), DEVICE_BIG_ENDIAN);
}
/* fw_cfg configuration interface */
create_fw_cfg(machine);
/* SCSI disk setup. */
dev = DEVICE(pci_create_simple(pci_bus, -1, "lsi53c895a"));
lsi53c8xx_handle_legacy_cmdline(dev);