riscv/sifive_u: Add QSPI memory region
The HiFive Unleashed uses is25wp256 SPI NOR flash. There is currently no model of this in QEMU, so to allow boot firmware developers to use QEMU to target the Unleashed let's add a chunk of memory to represent the QSPI0 memory mapped flash. This can be targeted using QEMU's -device loader command line option. In the future we can look at adding a model for the is25wp256 flash. Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
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@ -71,6 +71,7 @@ static const struct MemmapEntry {
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[SIFIVE_U_UART0] = { 0x10010000, 0x1000 },
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[SIFIVE_U_UART1] = { 0x10011000, 0x1000 },
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[SIFIVE_U_OTP] = { 0x10070000, 0x1000 },
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[SIFIVE_U_FLASH0] = { 0x20000000, 0x10000000 },
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[SIFIVE_U_DRAM] = { 0x80000000, 0x0 },
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[SIFIVE_U_GEM] = { 0x10090000, 0x2000 },
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[SIFIVE_U_GEM_MGMT] = { 0x100a0000, 0x1000 },
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@ -314,6 +315,7 @@ static void riscv_sifive_u_init(MachineState *machine)
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SiFiveUState *s = g_new0(SiFiveUState, 1);
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MemoryRegion *system_memory = get_system_memory();
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MemoryRegion *main_mem = g_new(MemoryRegion, 1);
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MemoryRegion *flash0 = g_new(MemoryRegion, 1);
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int i;
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/* Initialize SoC */
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@ -329,6 +331,12 @@ static void riscv_sifive_u_init(MachineState *machine)
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memory_region_add_subregion(system_memory, memmap[SIFIVE_U_DRAM].base,
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main_mem);
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/* register QSPI0 Flash */
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memory_region_init_ram(flash0, NULL, "riscv.sifive.u.flash0",
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memmap[SIFIVE_U_FLASH0].size, &error_fatal);
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memory_region_add_subregion(system_memory, memmap[SIFIVE_U_FLASH0].base,
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flash0);
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/* create device tree */
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create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline);
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@ -64,6 +64,7 @@ enum {
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SIFIVE_U_UART0,
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SIFIVE_U_UART1,
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SIFIVE_U_OTP,
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SIFIVE_U_FLASH0,
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SIFIVE_U_DRAM,
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SIFIVE_U_GEM,
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SIFIVE_U_GEM_MGMT
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