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Re: [PATCH 2/6] hw/riscv: opentitan: Use MachineState::ram and MachineCl
From: |
Igor Mammedov |
Subject: |
Re: [PATCH 2/6] hw/riscv: opentitan: Use MachineState::ram and MachineClass::default_ram_id |
Date: |
Tue, 19 Oct 2021 09:11:03 +0200 |
On Mon, 18 Oct 2021 23:38:25 +0800
Bin Meng <bmeng.cn@gmail.com> wrote:
> Using memory_region_init_ram(), which can't possibly handle vhost-user,
> and can't work as expected with '-numa node,memdev' options.
>
> Use MachineState::ram instead of manually initializing RAM memory
> region, as well as by providing MachineClass::default_ram_id to
> opt in to memdev scheme.
>
> Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
> ---
>
> hw/riscv/opentitan.c | 6 ++----
> 1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/hw/riscv/opentitan.c b/hw/riscv/opentitan.c
> index 9803ae6d70..c356293d29 100644
> --- a/hw/riscv/opentitan.c
> +++ b/hw/riscv/opentitan.c
> @@ -67,17 +67,14 @@ static void opentitan_board_init(MachineState *machine)
> const MemMapEntry *memmap = ibex_memmap;
> OpenTitanState *s = g_new0(OpenTitanState, 1);
> MemoryRegion *sys_mem = get_system_memory();
> - MemoryRegion *main_mem = g_new(MemoryRegion, 1);
It is likely that you are missing fixed size check here
(looking at code it seems to me that board doesn't support variable RAM size)
See commit 00b9829f83c for example.
> /* Initialize SoC */
> object_initialize_child(OBJECT(machine), "soc", &s->soc,
> TYPE_RISCV_IBEX_SOC);
> qdev_realize(DEVICE(&s->soc), NULL, &error_abort);
>
> - memory_region_init_ram(main_mem, NULL, "riscv.lowrisc.ibex.ram",
> - memmap[IBEX_DEV_RAM].size, &error_fatal);
> memory_region_add_subregion(sys_mem,
> - memmap[IBEX_DEV_RAM].base, main_mem);
> + memmap[IBEX_DEV_RAM].base, machine->ram);
>
> if (machine->firmware) {
> riscv_load_firmware(machine->firmware, memmap[IBEX_DEV_RAM].base,
> NULL);
> @@ -95,6 +92,7 @@ static void opentitan_machine_init(MachineClass *mc)
> mc->init = opentitan_board_init;
> mc->max_cpus = 1;
> mc->default_cpu_type = TYPE_RISCV_CPU_IBEX;
> + mc->default_ram_id = "riscv.lowrisc.ibex.ram";
Are you missing "mc->default_ram_size = memmap[IBEX_DEV_RAM].size" here?
otherwise it will default to generic:
hw/core/machine.c: mc->default_ram_size = 128 * MiB;
> }
>
> DEFINE_MACHINE("opentitan", opentitan_machine_init)
- [PATCH 1/6] hw/riscv: microchip_pfsoc: Use MachineState::ram and MachineClass::default_ram_id, Bin Meng, 2021/10/18
- [PATCH 2/6] hw/riscv: opentitan: Use MachineState::ram and MachineClass::default_ram_id, Bin Meng, 2021/10/18
- Re: [PATCH 2/6] hw/riscv: opentitan: Use MachineState::ram and MachineClass::default_ram_id,
Igor Mammedov <=
- [PATCH 3/6] hw/riscv: shakti_c: Use MachineState::ram and MachineClass::default_ram_id, Bin Meng, 2021/10/18
- [PATCH 4/6] hw/riscv: sifive_e: Use MachineState::ram and MachineClass::default_ram_id, Bin Meng, 2021/10/18
- [PATCH 5/6] hw/riscv: sifive_u: Use MachineState::ram and MachineClass::default_ram_id, Bin Meng, 2021/10/18
- [PATCH 6/6] hw/riscv: spike: Use MachineState::ram and MachineClass::default_ram_id, Bin Meng, 2021/10/18
- Re: [PATCH 1/6] hw/riscv: microchip_pfsoc: Use MachineState::ram and MachineClass::default_ram_id, Philippe Mathieu-Daudé, 2021/10/18