Merge tag 'pull-loongarch-20221215' of https://gitlab.com/gaosong/qemu into staging

Add cfi01 pflash device

# gpg: Signature made Thu 15 Dec 2022 07:49:03 GMT
# gpg:                using RSA key B8FF1DA0D2FDCB2DA09C6C2C40A2FFF239263EDF
# gpg: Good signature from "Song Gao <m17746591750@163.com>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: B8FF 1DA0 D2FD CB2D A09C  6C2C 40A2 FFF2 3926 3EDF

* tag 'pull-loongarch-20221215' of https://gitlab.com/gaosong/qemu:
  hw/loongarch/virt: Add cfi01 pflash device

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 62 insertions, 0 deletions

diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c
index 958be74fa1..c8a495ea30 100644
--- a/hw/loongarch/virt.c
+++ b/hw/loongarch/virt.c
@@ -42,6 +42,63 @@
 #include "hw/display/ramfb.h"
 #include "hw/mem/pc-dimm.h"
 #include "sysemu/tpm.h"
+#include "sysemu/block-backend.h"
+#include "hw/block/flash.h"
+
+static void virt_flash_create(LoongArchMachineState *lams)
+{
+    DeviceState *dev = qdev_new(TYPE_PFLASH_CFI01);
+
+    qdev_prop_set_uint64(dev, "sector-length", VIRT_FLASH_SECTOR_SIZE);
+    qdev_prop_set_uint8(dev, "width", 4);
+    qdev_prop_set_uint8(dev, "device-width", 2);
+    qdev_prop_set_bit(dev, "big-endian", false);
+    qdev_prop_set_uint16(dev, "id0", 0x89);
+    qdev_prop_set_uint16(dev, "id1", 0x18);
+    qdev_prop_set_uint16(dev, "id2", 0x00);
+    qdev_prop_set_uint16(dev, "id3", 0x00);
+    qdev_prop_set_string(dev, "name", "virt.flash");
+    object_property_add_child(OBJECT(lams), "virt.flash", OBJECT(dev));
+    object_property_add_alias(OBJECT(lams), "pflash",
+                              OBJECT(dev), "drive");
+
+    lams->flash = PFLASH_CFI01(dev);
+}
+
+static void virt_flash_map(LoongArchMachineState *lams,
+                           MemoryRegion *sysmem)
+{
+    PFlashCFI01 *flash = lams->flash;
+    DeviceState *dev = DEVICE(flash);
+    hwaddr base = VIRT_FLASH_BASE;
+    hwaddr size = VIRT_FLASH_SIZE;
+
+    assert(QEMU_IS_ALIGNED(size, VIRT_FLASH_SECTOR_SIZE));
+    assert(size / VIRT_FLASH_SECTOR_SIZE <= UINT32_MAX);
+
+    qdev_prop_set_uint32(dev, "num-blocks", size / VIRT_FLASH_SECTOR_SIZE);
+    sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
+    memory_region_add_subregion(sysmem, base,
+                                sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0));
+
+}
+
+static void fdt_add_flash_node(LoongArchMachineState *lams)
+{
+    MachineState *ms = MACHINE(lams);
+    char *nodename;
+
+    hwaddr flash_base = VIRT_FLASH_BASE;
+    hwaddr flash_size = VIRT_FLASH_SIZE;
+
+    nodename = g_strdup_printf("/flash@%" PRIx64, flash_base);
+    qemu_fdt_add_subnode(ms->fdt, nodename);
+    qemu_fdt_setprop_string(ms->fdt, nodename, "compatible", "cfi-flash");
+    qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg",
+                                 2, flash_base, 2, flash_size);
+    qemu_fdt_setprop_cell(ms->fdt, nodename, "bank-width", 4);
+    g_free(nodename);
+}
 
 static void fdt_add_rtc_node(LoongArchMachineState *lams)
 {
@@ -596,6 +653,9 @@ static void loongarch_firmware_init(LoongArchMachineState *lams)
     int bios_size;
 
     lams->bios_loaded = false;
+
+    virt_flash_map(lams, get_system_memory());
+
     if (filename) {
         bios_name = qemu_find_file(QEMU_FILE_TYPE_BIOS, filename);
         if (!bios_name) {
@@ -779,6 +839,7 @@ static void loongarch_init(MachineState *machine)
             loongarch_direct_kernel_boot(lams);
         }
     }
+    fdt_add_flash_node(lams);
     /* register reset function */
     for (i = 0; i < machine->smp.cpus; i++) {
         lacpu = LOONGARCH_CPU(qemu_get_cpu(i));
@@ -838,6 +899,7 @@ static void loongarch_machine_initfn(Object *obj)
     lams->acpi = ON_OFF_AUTO_AUTO;
     lams->oem_id = g_strndup(ACPI_BUILD_APPNAME6, 6);
     lams->oem_table_id = g_strndup(ACPI_BUILD_APPNAME8, 8);
+    virt_flash_create(lams);
 }
 
 static bool memhp_type_supported(DeviceState *dev)