hw/riscv: Initial support for Microchip PolarFire SoC Icicle Kit board

This is an initial support for Microchip PolarFire SoC Icicle Kit.
The Icicle Kit board integrates a PolarFire SoC, with one SiFive's
E51 plus four U54 cores and many on-chip peripherals and an FPGA.

For more details about Microchip PolarFire Soc, please see:
https://www.microsemi.com/product-directory/soc-fpgas/5498-polarfire-soc-fpga

Unlike SiFive FU540, the RISC-V core resect vector is at 0x20220000.
The following perepherals are created as an unimplemented device:

- Bus Error Uint 0/1/2/3/4
- L2 cache controller
- SYSREG
- MPUCFG
- IOSCBCFG

More devices will be added later.

The BIOS image used by this machine is hss.bin, aka Hart Software
Services, which can be built from:
https://github.com/polarfire-soc/hart-software-services

To launch this machine:
$ qemu-system-riscv64 -nographic -M microchip-icicle-kit

The memory is set to 1 GiB by default to match the hardware.
A sanity check on ram size is performed in the machine init routine
to prompt user to increase the RAM size to > 1 GiB when less than
1 GiB ram is detected.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <1598924352-89526-5-git-send-email-bmeng.cn@gmail.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/MAINTAINERS b/MAINTAINERS
index 7d0a5e91e4..9641ed37e2 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1316,6 +1316,13 @@ F: include/hw/riscv/opentitan.h
 F: include/hw/char/ibex_uart.h
 F: include/hw/intc/ibex_plic.h
 
+Microchip PolarFire SoC Icicle Kit
+M: Bin Meng <bin.meng@windriver.com>
+L: qemu-riscv@nongnu.org
+S: Supported
+F: hw/riscv/microchip_pfsoc.c
+F: include/hw/riscv/microchip_pfsoc.h
+
 RX Machines
 -----------
 rx-gdbsim