[PATCH v2 04/10] hw/arm/aspeed_ast27x0 Introduce vbootrom memory region

[Jamin Lin via <qemu-devel@nongnu.org>]

Introduce a new vbootrom memory region. The region is mapped at address
"0x00000000" and has a size of 128KB, identical to the SRAM region size.
This memory region is intended for loading a vbootrom image file as part of the
boot process.

The vbootrom region is initialized as ROM and registered in the SoC's address
space using the ASPEED_DEV_VBOOTROM index.

Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
---
 include/hw/arm/aspeed_soc.h |  1 +
 hw/arm/aspeed_ast27x0.c     | 10 ++++++++++
 2 files changed, 11 insertions(+)

diff --git a/include/hw/arm/aspeed_soc.h b/include/hw/arm/aspeed_soc.h
index 432f6178ac..9af8cfbc3e 100644
--- a/include/hw/arm/aspeed_soc.h
+++ b/include/hw/arm/aspeed_soc.h
@@ -59,6 +59,7 @@ struct AspeedSoCState {
     MemoryRegion sram;
     MemoryRegion spi_boot_container;
     MemoryRegion spi_boot;
+    MemoryRegion vbootrom;
     AddressSpace dram_as;
     AspeedRtcState rtc;
     AspeedTimerCtrlState timerctrl;
diff --git a/hw/arm/aspeed_ast27x0.c b/hw/arm/aspeed_ast27x0.c
index c7188ae5f1..0982e63639 100644
--- a/hw/arm/aspeed_ast27x0.c
+++ b/hw/arm/aspeed_ast27x0.c
@@ -24,6 +24,7 @@
 #include "qemu/log.h"
 
 static const hwaddr aspeed_soc_ast2700_memmap[] = {
+    [ASPEED_DEV_VBOOTROM]  =  0x00000000,
     [ASPEED_DEV_SRAM]      =  0x10000000,
     [ASPEED_DEV_HACE]      =  0x12070000,
     [ASPEED_DEV_EMMC]      =  0x12090000,
@@ -657,6 +658,15 @@ static void aspeed_soc_ast2700_realize(DeviceState *dev, Error **errp)
     memory_region_add_subregion(s->memory,
                                 sc->memmap[ASPEED_DEV_SRAM], &s->sram);
 
+    /* VBOOTROM */
+    name = g_strdup_printf("aspeed.vbootrom.%d", CPU(&a->cpu[0])->cpu_index);
+    if (!memory_region_init_rom(&s->vbootrom, OBJECT(s), name,
+                                sc->vbootrom_size, errp)) {
+        return;
+    }
+    memory_region_add_subregion(s->memory,
+                                sc->memmap[ASPEED_DEV_VBOOTROM], &s->vbootrom);
+
     /* SCU */
     if (!sysbus_realize(SYS_BUS_DEVICE(&s->scu), errp)) {
         return;
-- 
2.43.0