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[PATCH v6 1/2] hw/riscv/boot.c: consolidate all kernel init in riscv_loa
From: |
Daniel Henrique Barboza |
Subject: |
[PATCH v6 1/2] hw/riscv/boot.c: consolidate all kernel init in riscv_load_kernel() |
Date: |
Thu, 12 Jan 2023 19:34:43 -0300 |
The microchip_icicle_kit, sifive_u, spike and virt boards are now doing
the same steps when '-kernel' is used:
- execute load_kernel()
- load init_rd()
- write kernel_cmdline
Let's fold everything inside riscv_load_kernel() to avoid code
repetition. To not change the behavior of boards that aren't calling
riscv_load_initrd(), add an 'load_initrd' flag to riscv_load_kernel()
and allow these boards to opt out from initrd loading.
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
---
hw/riscv/boot.c | 30 +++++++++++++++++++++++++++---
hw/riscv/microchip_pfsoc.c | 12 ++----------
hw/riscv/opentitan.c | 3 ++-
hw/riscv/sifive_e.c | 4 +++-
hw/riscv/sifive_u.c | 13 +++----------
hw/riscv/spike.c | 10 +---------
hw/riscv/virt.c | 13 +++----------
include/hw/riscv/boot.h | 2 ++
8 files changed, 43 insertions(+), 44 deletions(-)
diff --git a/hw/riscv/boot.c b/hw/riscv/boot.c
index 2594276223..e8e8b8517c 100644
--- a/hw/riscv/boot.c
+++ b/hw/riscv/boot.c
@@ -175,10 +175,12 @@ target_ulong riscv_load_firmware(const char
*firmware_filename,
target_ulong riscv_load_kernel(MachineState *machine,
target_ulong kernel_start_addr,
+ bool load_initrd, bool is_32bits,
symbol_fn_t sym_cb)
{
const char *kernel_filename = machine->kernel_filename;
uint64_t kernel_load_base, kernel_entry;
+ void *fdt = machine->fdt;
g_assert(kernel_filename != NULL);
@@ -192,21 +194,43 @@ target_ulong riscv_load_kernel(MachineState *machine,
if (load_elf_ram_sym(kernel_filename, NULL, NULL, NULL,
NULL, &kernel_load_base, NULL, NULL, 0,
EM_RISCV, 1, 0, NULL, true, sym_cb) > 0) {
- return kernel_load_base;
+ kernel_entry = kernel_load_base;
+ /*
+ * kernel_load_base is sign-extended for 32 bits and can
+ * be padded with '1's. Do an uint32_t cast to avoid the
+ * padding if we're running a 32 bit CPU.
+ */
+ if (is_32bits) {
+ kernel_entry = (uint32_t)kernel_load_base;
+ }
+ goto out;
}
if (load_uimage_as(kernel_filename, &kernel_entry, NULL, NULL,
NULL, NULL, NULL) > 0) {
- return kernel_entry;
+ goto out;
}
if (load_image_targphys_as(kernel_filename, kernel_start_addr,
current_machine->ram_size, NULL) > 0) {
- return kernel_start_addr;
+ kernel_entry = kernel_start_addr;
+ goto out;
}
error_report("could not load kernel '%s'", kernel_filename);
exit(1);
+
+out:
+ if (load_initrd && machine->initrd_filename) {
+ riscv_load_initrd(machine, kernel_entry);
+ }
+
+ if (fdt && machine->kernel_cmdline && *machine->kernel_cmdline) {
+ qemu_fdt_setprop_string(fdt, "/chosen", "bootargs",
+ machine->kernel_cmdline);
+ }
+
+ return kernel_entry;
}
void riscv_load_initrd(MachineState *machine, uint64_t kernel_entry)
diff --git a/hw/riscv/microchip_pfsoc.c b/hw/riscv/microchip_pfsoc.c
index 82ae5e7023..cb9e126827 100644
--- a/hw/riscv/microchip_pfsoc.c
+++ b/hw/riscv/microchip_pfsoc.c
@@ -629,16 +629,8 @@ static void microchip_icicle_kit_machine_init(MachineState
*machine)
kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc.u_cpus,
firmware_end_addr);
- kernel_entry = riscv_load_kernel(machine, kernel_start_addr, NULL);
-
- if (machine->initrd_filename) {
- riscv_load_initrd(machine, kernel_entry);
- }
-
- if (machine->kernel_cmdline && *machine->kernel_cmdline) {
- qemu_fdt_setprop_string(machine->fdt, "/chosen",
- "bootargs", machine->kernel_cmdline);
- }
+ kernel_entry = riscv_load_kernel(machine, kernel_start_addr,
+ true, false, NULL);
/* Compute the fdt load address in dram */
fdt_load_addr = riscv_load_fdt(memmap[MICROCHIP_PFSOC_DRAM_LO].base,
diff --git a/hw/riscv/opentitan.c b/hw/riscv/opentitan.c
index 64d5d435b9..05f2cfde32 100644
--- a/hw/riscv/opentitan.c
+++ b/hw/riscv/opentitan.c
@@ -101,7 +101,8 @@ static void opentitan_board_init(MachineState *machine)
}
if (machine->kernel_filename) {
- riscv_load_kernel(machine, memmap[IBEX_DEV_RAM].base, NULL);
+ riscv_load_kernel(machine, memmap[IBEX_DEV_RAM].base,
+ false, true, NULL);
}
}
diff --git a/hw/riscv/sifive_e.c b/hw/riscv/sifive_e.c
index 3e3f4b0088..5969ae8131 100644
--- a/hw/riscv/sifive_e.c
+++ b/hw/riscv/sifive_e.c
@@ -114,7 +114,9 @@ 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, memmap[SIFIVE_E_DEV_DTIM].base, NULL);
+ riscv_load_kernel(machine, memmap[SIFIVE_E_DEV_DTIM].base,
+ false, riscv_is_32bit(&s->soc.cpus),
+ NULL);
}
}
diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c
index bac394c959..44f5a2ba27 100644
--- a/hw/riscv/sifive_u.c
+++ b/hw/riscv/sifive_u.c
@@ -598,16 +598,9 @@ static void sifive_u_machine_init(MachineState *machine)
kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc.u_cpus,
firmware_end_addr);
- kernel_entry = riscv_load_kernel(machine, kernel_start_addr, NULL);
-
- if (machine->initrd_filename) {
- riscv_load_initrd(machine, kernel_entry);
- }
-
- if (machine->kernel_cmdline && *machine->kernel_cmdline) {
- qemu_fdt_setprop_string(machine->fdt, "/chosen", "bootargs",
- machine->kernel_cmdline);
- }
+ kernel_entry = riscv_load_kernel(machine, kernel_start_addr,
+ true, riscv_is_32bit(&s->soc.u_cpus),
+ NULL);
} else {
/*
* If dynamic firmware is used, it doesn't know where is the next mode
diff --git a/hw/riscv/spike.c b/hw/riscv/spike.c
index bff9475686..4766152429 100644
--- a/hw/riscv/spike.c
+++ b/hw/riscv/spike.c
@@ -308,16 +308,8 @@ static void spike_board_init(MachineState *machine)
firmware_end_addr);
kernel_entry = riscv_load_kernel(machine, kernel_start_addr,
+ true, riscv_is_32bit(&s->soc[0]),
htif_symbol_callback);
-
- if (machine->initrd_filename) {
- riscv_load_initrd(machine, kernel_entry);
- }
-
- if (machine->kernel_cmdline && *machine->kernel_cmdline) {
- qemu_fdt_setprop_string(machine->fdt, "/chosen", "bootargs",
- machine->kernel_cmdline);
- }
} else {
/*
* If dynamic firmware is used, it doesn't know where is the next mode
diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
index c8e35f861e..91f6b02983 100644
--- a/hw/riscv/virt.c
+++ b/hw/riscv/virt.c
@@ -1281,16 +1281,9 @@ static void virt_machine_done(Notifier *notifier, void
*data)
kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc[0],
firmware_end_addr);
- kernel_entry = riscv_load_kernel(machine, kernel_start_addr, NULL);
-
- if (machine->initrd_filename) {
- riscv_load_initrd(machine, kernel_entry);
- }
-
- if (machine->kernel_cmdline && *machine->kernel_cmdline) {
- qemu_fdt_setprop_string(machine->fdt, "/chosen", "bootargs",
- machine->kernel_cmdline);
- }
+ kernel_entry = riscv_load_kernel(machine, kernel_start_addr,
+ true, riscv_is_32bit(&s->soc[0]),
+ NULL);
} else {
/*
* If dynamic firmware is used, it doesn't know where is the next mode
diff --git a/include/hw/riscv/boot.h b/include/hw/riscv/boot.h
index f94653a09b..d34f61e280 100644
--- a/include/hw/riscv/boot.h
+++ b/include/hw/riscv/boot.h
@@ -45,6 +45,8 @@ target_ulong riscv_load_firmware(const char
*firmware_filename,
symbol_fn_t sym_cb);
target_ulong riscv_load_kernel(MachineState *machine,
target_ulong firmware_end_addr,
+ bool load_initrd,
+ bool is_32bits,
symbol_fn_t sym_cb);
void riscv_load_initrd(MachineState *machine, uint64_t kernel_entry);
uint64_t riscv_load_fdt(hwaddr dram_start, uint64_t dram_size, void *fdt);
--
2.39.0