hw/riscv: microchip_pfsoc: Hook the I2C1 controller

The latest SD card image [1] released by Microchip ships a Linux
kernel with built-in PolarFire SoC I2C driver support. The device
tree file includes the description for the I2C1 node hence kernel
tries to probe the I2C1 device during boot.

It is enough to create an unimplemented device for I2C1 to allow
the kernel to continue booting to the shell.

[1] ftp://ftpsoc.microsemi.com/outgoing/core-image-minimal-dev-icicle-kit-es-sd-20201009141623.rootfs.wic.gz

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 1603863010-15807-11-git-send-email-bmeng.cn@gmail.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

diff --git a/hw/riscv/microchip_pfsoc.c b/hw/riscv/microchip_pfsoc.c
index 96cb8b983a409a3e7db47640e156a4a513d3e545..37ac46a1afe4d5f47a8609fe0b7a59f7b7c5c7e8 100644 (file)
--- a/hw/riscv/microchip_pfsoc.c
+++ b/hw/riscv/microchip_pfsoc.c
@@ -113,6 +113,7 @@ static const struct MemmapEntry {
     [MICROCHIP_PFSOC_MMUART2] =         { 0x20102000,     0x1000 },
     [MICROCHIP_PFSOC_MMUART3] =         { 0x20104000,     0x1000 },
     [MICROCHIP_PFSOC_MMUART4] =         { 0x20106000,     0x1000 },
+    [MICROCHIP_PFSOC_I2C1] =            { 0x2010b000,     0x1000 },
     [MICROCHIP_PFSOC_GEM0] =            { 0x20110000,     0x2000 },
     [MICROCHIP_PFSOC_GEM1] =            { 0x20112000,     0x2000 },
     [MICROCHIP_PFSOC_GPIO0] =           { 0x20120000,     0x1000 },
@@ -343,6 +344,11 @@ static void microchip_pfsoc_soc_realize(DeviceState *dev, Error **errp)
         qdev_get_gpio_in(DEVICE(s->plic), MICROCHIP_PFSOC_MMUART4_IRQ),
         serial_hd(4));
 
+    /* I2C1 */
+    create_unimplemented_device("microchip.pfsoc.i2c1",
+        memmap[MICROCHIP_PFSOC_I2C1].base,
+        memmap[MICROCHIP_PFSOC_I2C1].size);
+
     /* GEMs */
 
     nd = &nd_table[0];

diff --git a/include/hw/riscv/microchip_pfsoc.h b/include/hw/riscv/microchip_pfsoc.h
index db77e9c84a9e8855f7bc06c9622d08ec1bc74d83..51d44637db607dcb5126a6b8a925b0358e2b6f04 100644 (file)
--- a/include/hw/riscv/microchip_pfsoc.h
+++ b/include/hw/riscv/microchip_pfsoc.h
@@ -97,6 +97,7 @@ enum {
     MICROCHIP_PFSOC_MMUART2,
     MICROCHIP_PFSOC_MMUART3,
     MICROCHIP_PFSOC_MMUART4,
+    MICROCHIP_PFSOC_I2C1,
     MICROCHIP_PFSOC_GEM0,
     MICROCHIP_PFSOC_GEM1,
     MICROCHIP_PFSOC_GPIO0,