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riscv/virt: Support using pflash via -blockdev option 

Currently, pflash devices can be configured only via -pflash
or -drive options. This is the legacy way and the
better way is to use -blockdev as in other architectures.
libvirt also has moved to use -blockdev method.

To support -blockdev option, pflash devices need to be
created in instance_init itself. So, update the code to
move the virt_flash_create() to instance_init. Also, use
standard interfaces to detect whether pflash0 is
configured or not.

Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Reported-by: Andrea Bolognani <abologna@redhat.com>
Tested-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20230601045910.18646-3-sunilvl@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Sunil V L 2023-06-01 10:29:09 +05:30 committed by Alistair Francis
parent 4263e270a2
commit 13bdfb8b54
1 changed files with 5 additions and 3 deletions
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8
hw/riscv/virt.c
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@ -1246,6 +1246,7 @@ static void virt_machine_done(Notifier *notifier, void *data)
const char *firmware_name = riscv_default_firmware_name(&s->soc[0]);
uint32_t fdt_load_addr;
uint64_t kernel_entry = 0;
BlockBackend *pflash_blk0;
/*
* Only direct boot kernel is currently supported for KVM VM,
@ -1266,7 +1267,8 @@ static void virt_machine_done(Notifier *notifier, void *data)
firmware_end_addr = riscv_find_and_load_firmware(machine, firmware_name,
start_addr, NULL);
if (drive_get(IF_PFLASH, 0, 0)) {
pflash_blk0 = pflash_cfi01_get_blk(s->flash[0]);
if (pflash_blk0) {
if (machine->firmware && !strcmp(machine->firmware, "none") &&
!kvm_enabled()) {
/*
@ -1499,8 +1501,6 @@ static void virt_machine_init(MachineState *machine)
sysbus_create_simple("goldfish_rtc", memmap[VIRT_RTC].base,
qdev_get_gpio_in(mmio_irqchip, RTC_IRQ));
virt_flash_create(s);
for (i = 0; i < ARRAY_SIZE(s->flash); i++) {
/* Map legacy -drive if=pflash to machine properties */
pflash_cfi01_legacy_drive(s->flash[i],
@ -1527,6 +1527,8 @@ static void virt_machine_instance_init(Object *obj)
{
RISCVVirtState *s = RISCV_VIRT_MACHINE(obj);
virt_flash_create(s);
s->oem_id = g_strndup(ACPI_BUILD_APPNAME6, 6);
s->oem_table_id = g_strndup(ACPI_BUILD_APPNAME8, 8);
s->acpi = ON_OFF_AUTO_AUTO;