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[PATCH v1 4/4] hw/riscv: Load the kernel after the firmware
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From: |
Alistair Francis |
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Subject: |
[PATCH v1 4/4] hw/riscv: Load the kernel after the firmware |
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Date: |
Fri, 2 Oct 2020 08:31:13 -0700 |
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
---
include/hw/riscv/boot.h | 1 +
hw/riscv/boot.c | 10 +++++-----
hw/riscv/opentitan.c | 3 ++-
hw/riscv/sifive_e.c | 3 ++-
hw/riscv/sifive_u.c | 13 +++++++++++--
hw/riscv/spike.c | 14 +++++++++++---
hw/riscv/virt.c | 14 +++++++++++---
7 files changed, 43 insertions(+), 15 deletions(-)
diff --git a/include/hw/riscv/boot.h b/include/hw/riscv/boot.h
index 2975ed1a31..85d3227ea6 100644
--- a/include/hw/riscv/boot.h
+++ b/include/hw/riscv/boot.h
@@ -34,6 +34,7 @@ target_ulong riscv_load_firmware(const char
*firmware_filename,
hwaddr firmware_load_addr,
symbol_fn_t sym_cb);
target_ulong riscv_load_kernel(const char *kernel_filename,
+ target_ulong firmware_end_addr,
symbol_fn_t sym_cb);
hwaddr riscv_load_initrd(const char *filename, uint64_t mem_size,
uint64_t kernel_entry, hwaddr *start);
diff --git a/hw/riscv/boot.c b/hw/riscv/boot.c
index 5dea644f47..f8e55ca16a 100644
--- a/hw/riscv/boot.c
+++ b/hw/riscv/boot.c
@@ -33,10 +33,8 @@
#include <libfdt.h>
#if defined(TARGET_RISCV32)
-# define KERNEL_BOOT_ADDRESS 0x80400000
#define fw_dynamic_info_data(__val) cpu_to_le32(__val)
#else
-# define KERNEL_BOOT_ADDRESS 0x80200000
#define fw_dynamic_info_data(__val) cpu_to_le64(__val)
#endif
@@ -123,7 +121,9 @@ target_ulong riscv_load_firmware(const char
*firmware_filename,
exit(1);
}
-target_ulong riscv_load_kernel(const char *kernel_filename, symbol_fn_t sym_cb)
+target_ulong riscv_load_kernel(const char *kernel_filename,
+ target_ulong kernel_start_addr,
+ symbol_fn_t sym_cb)
{
uint64_t kernel_entry;
@@ -138,9 +138,9 @@ target_ulong riscv_load_kernel(const char *kernel_filename,
symbol_fn_t sym_cb)
return kernel_entry;
}
- if (load_image_targphys_as(kernel_filename, KERNEL_BOOT_ADDRESS,
+ if (load_image_targphys_as(kernel_filename, kernel_start_addr,
ram_size, NULL) > 0) {
- return KERNEL_BOOT_ADDRESS;
+ return kernel_start_addr;
}
error_report("could not load kernel '%s'", kernel_filename);
diff --git a/hw/riscv/opentitan.c b/hw/riscv/opentitan.c
index 0531bd879b..cc758b78b8 100644
--- a/hw/riscv/opentitan.c
+++ b/hw/riscv/opentitan.c
@@ -75,7 +75,8 @@ static void opentitan_board_init(MachineState *machine)
}
if (machine->kernel_filename) {
- riscv_load_kernel(machine->kernel_filename, NULL);
+ riscv_load_kernel(machine->kernel_filename,
+ memmap[IBEX_DEV_RAM].base, NULL);
}
}
diff --git a/hw/riscv/sifive_e.c b/hw/riscv/sifive_e.c
index fcfac16816..59bac4cc9a 100644
--- a/hw/riscv/sifive_e.c
+++ b/hw/riscv/sifive_e.c
@@ -114,7 +114,8 @@ static void sifive_e_machine_init(MachineState *machine)
memmap[SIFIVE_E_DEV_MROM].base,
&address_space_memory);
if (machine->kernel_filename) {
- riscv_load_kernel(machine->kernel_filename, NULL);
+ riscv_load_kernel(machine->kernel_filename,
+ memmap[SIFIVE_E_DEV_DTIM].base, NULL);
}
}
diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c
index 5f3ad9bc0f..08b0a3937d 100644
--- a/hw/riscv/sifive_u.c
+++ b/hw/riscv/sifive_u.c
@@ -415,6 +415,7 @@ static void sifive_u_machine_init(MachineState *machine)
MemoryRegion *main_mem = g_new(MemoryRegion, 1);
MemoryRegion *flash0 = g_new(MemoryRegion, 1);
target_ulong start_addr = memmap[SIFIVE_U_DEV_DRAM].base;
+ target_ulong firmware_end_addr, kernel_start_addr;
uint32_t start_addr_hi32 = 0x00000000;
int i;
uint32_t fdt_load_addr;
@@ -474,10 +475,18 @@ static void sifive_u_machine_init(MachineState *machine)
break;
}
- riscv_find_and_load_firmware(machine, BIOS_FILENAME, start_addr, NULL);
+ firmware_end_addr = riscv_find_and_load_firmware(machine, BIOS_FILENAME,
+ start_addr, NULL);
if (machine->kernel_filename) {
- kernel_entry = riscv_load_kernel(machine->kernel_filename, NULL);
+ if (riscv_is_32_bit(machine)) {
+ kernel_start_addr = QEMU_ALIGN_UP(firmware_end_addr, 0x400000);
+ } else {
+ kernel_start_addr = QEMU_ALIGN_UP(firmware_end_addr, 0x200000);
+ }
+
+ kernel_entry = riscv_load_kernel(machine->kernel_filename,
+ kernel_start_addr, NULL);
if (machine->initrd_filename) {
hwaddr start;
diff --git a/hw/riscv/spike.c b/hw/riscv/spike.c
index 3fd152a035..280fb1f328 100644
--- a/hw/riscv/spike.c
+++ b/hw/riscv/spike.c
@@ -195,6 +195,7 @@ static void spike_board_init(MachineState *machine)
MemoryRegion *system_memory = get_system_memory();
MemoryRegion *main_mem = g_new(MemoryRegion, 1);
MemoryRegion *mask_rom = g_new(MemoryRegion, 1);
+ target_ulong firmware_end_addr, kernel_start_addr;
uint32_t fdt_load_addr;
uint64_t kernel_entry;
char *soc_name;
@@ -261,12 +262,19 @@ static void spike_board_init(MachineState *machine)
memory_region_add_subregion(system_memory, memmap[SPIKE_MROM].base,
mask_rom);
- riscv_find_and_load_firmware(machine, BIOS_FILENAME,
- memmap[SPIKE_DRAM].base,
- htif_symbol_callback);
+ firmware_end_addr = riscv_find_and_load_firmware(machine, BIOS_FILENAME,
+ memmap[SPIKE_DRAM].base,
+ htif_symbol_callback);
if (machine->kernel_filename) {
+ if (riscv_is_32_bit(machine)) {
+ kernel_start_addr = QEMU_ALIGN_UP(firmware_end_addr, 0x400000);
+ } else {
+ kernel_start_addr = QEMU_ALIGN_UP(firmware_end_addr, 0x200000);
+ }
+
kernel_entry = riscv_load_kernel(machine->kernel_filename,
+ kernel_start_addr,
htif_symbol_callback);
if (machine->initrd_filename) {
diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
index 41bd2f38ba..bf22d28eef 100644
--- a/hw/riscv/virt.c
+++ b/hw/riscv/virt.c
@@ -493,6 +493,7 @@ static void virt_machine_init(MachineState *machine)
char *plic_hart_config, *soc_name;
size_t plic_hart_config_len;
target_ulong start_addr = memmap[VIRT_DRAM].base;
+ target_ulong firmware_end_addr, kernel_start_addr;
uint32_t fdt_load_addr;
uint64_t kernel_entry;
DeviceState *mmio_plic, *virtio_plic, *pcie_plic;
@@ -602,11 +603,18 @@ static void virt_machine_init(MachineState *machine)
memory_region_add_subregion(system_memory, memmap[VIRT_MROM].base,
mask_rom);
- riscv_find_and_load_firmware(machine, BIOS_FILENAME,
- memmap[VIRT_DRAM].base, NULL);
+ firmware_end_addr = riscv_find_and_load_firmware(machine, BIOS_FILENAME,
+ start_addr, NULL);
if (machine->kernel_filename) {
- kernel_entry = riscv_load_kernel(machine->kernel_filename, NULL);
+ if (riscv_is_32_bit(machine)) {
+ kernel_start_addr = QEMU_ALIGN_UP(firmware_end_addr, 0x400000);
+ } else {
+ kernel_start_addr = QEMU_ALIGN_UP(firmware_end_addr, 0x200000);
+ }
+
+ kernel_entry = riscv_load_kernel(machine->kernel_filename,
+ kernel_start_addr, NULL);
if (machine->initrd_filename) {
hwaddr start;
--
2.28.0