aspeed: Add eMMC Boot Controller stub

Guest code (u-boot) pokes at this on boot. No functionality is required
for guest code to work correctly, but it helps to document the region
being read from.

Signed-off-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20220318092211.723938-1-joel@jms.id.au>
Signed-off-by: Cédric Le Goater <clg@kaod.org>

diff --git a/hw/arm/aspeed_ast2600.c b/hw/arm/aspeed_ast2600.c
index c1e15e3..eedda7b 100644 (file)
--- a/hw/arm/aspeed_ast2600.c
+++ b/hw/arm/aspeed_ast2600.c
@@ -48,6 +48,7 @@ static const hwaddr aspeed_soc_ast2600_memmap[] = {
     [ASPEED_DEV_ADC]       = 0x1E6E9000,
     [ASPEED_DEV_DP]        = 0x1E6EB000,
     [ASPEED_DEV_SBC]       = 0x1E6F2000,
+    [ASPEED_DEV_EMMC_BC]   = 0x1E6f5000,
     [ASPEED_DEV_VIDEO]     = 0x1E700000,
     [ASPEED_DEV_SDHCI]     = 0x1E740000,
     [ASPEED_DEV_EMMC]      = 0x1E750000,
@@ -257,6 +258,11 @@ static void aspeed_soc_ast2600_realize(DeviceState *dev, Error **errp)
     create_unimplemented_device("aspeed.video", sc->memmap[ASPEED_DEV_VIDEO],
                                 0x1000);
 
+    /* eMMC Boot Controller stub */
+    create_unimplemented_device("aspeed.emmc-boot-controller",
+                                sc->memmap[ASPEED_DEV_EMMC_BC],
+                                0x1000);
+
     /* CPU */
     for (i = 0; i < sc->num_cpus; i++) {
         if (sc->num_cpus > 1) {

diff --git a/include/hw/arm/aspeed_soc.h b/include/hw/arm/aspeed_soc.h
index da043dc..12dc4c4 100644 (file)
--- a/include/hw/arm/aspeed_soc.h
+++ b/include/hw/arm/aspeed_soc.h
@@ -112,6 +112,7 @@ enum {
     ASPEED_DEV_SCU,
     ASPEED_DEV_ADC,
     ASPEED_DEV_SBC,
+    ASPEED_DEV_EMMC_BC,
     ASPEED_DEV_VIDEO,
     ASPEED_DEV_SRAM,
     ASPEED_DEV_SDHCI,