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[PATCH v1 2/6] riscv/sifive_u: Add QSPI memory region
From: |
Alistair Francis |
Subject: |
[PATCH v1 2/6] riscv/sifive_u: Add QSPI memory region |
Date: |
Thu, 19 Sep 2019 15:24:58 -0700 |
There doesn't seem to be details on what QSPI the HiFive Unleashed uses.
To allow boot firmware developers to use QEMU to target the Unleashed
let's add a chunk of memory to represent the QSPI. This can be targeted
using QEMU's -device loader command line option.
Signed-off-by: Alistair Francis <address@hidden>
---
hw/riscv/sifive_u.c | 8 ++++++++
include/hw/riscv/sifive_u.h | 1 +
2 files changed, 9 insertions(+)
diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c
index de6e197882..9c5d791320 100644
--- a/hw/riscv/sifive_u.c
+++ b/hw/riscv/sifive_u.c
@@ -71,6 +71,7 @@ static const struct MemmapEntry {
[SIFIVE_U_UART0] = { 0x10010000, 0x1000 },
[SIFIVE_U_UART1] = { 0x10011000, 0x1000 },
[SIFIVE_U_OTP] = { 0x10070000, 0x1000 },
+ [SIFIVE_U_FLASH0] = { 0x20000000, 0x2000000 },
[SIFIVE_U_DRAM] = { 0x80000000, 0x0 },
[SIFIVE_U_GEM] = { 0x10090000, 0x2000 },
[SIFIVE_U_GEM_MGMT] = { 0x100a0000, 0x1000 },
@@ -313,6 +314,7 @@ static void riscv_sifive_u_init(MachineState *machine)
SiFiveUState *s = g_new0(SiFiveUState, 1);
MemoryRegion *system_memory = get_system_memory();
MemoryRegion *main_mem = g_new(MemoryRegion, 1);
+ MemoryRegion *flash0 = g_new(MemoryRegion, 1);
int i;
/* Initialize SoC */
@@ -328,6 +330,12 @@ static void riscv_sifive_u_init(MachineState *machine)
memory_region_add_subregion(system_memory, memmap[SIFIVE_U_DRAM].base,
main_mem);
+ /* register QSPI0 Flash */
+ memory_region_init_ram(flash0, NULL, "riscv.sifive.u.flash0",
+ memmap[SIFIVE_U_FLASH0].size, &error_fatal);
+ memory_region_add_subregion(system_memory, memmap[SIFIVE_U_FLASH0].base,
+ flash0);
+
/* create device tree */
create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline);
diff --git a/include/hw/riscv/sifive_u.h b/include/hw/riscv/sifive_u.h
index 50e3620c02..2a08e2a5db 100644
--- a/include/hw/riscv/sifive_u.h
+++ b/include/hw/riscv/sifive_u.h
@@ -64,6 +64,7 @@ enum {
SIFIVE_U_UART0,
SIFIVE_U_UART1,
SIFIVE_U_OTP,
+ SIFIVE_U_FLASH0,
SIFIVE_U_DRAM,
SIFIVE_U_GEM,
SIFIVE_U_GEM_MGMT
--
2.23.0
[PATCH v1 6/6] riscv/virt: Jump to pflash if specified, Alistair Francis, 2019/09/19