Re: [PATCH v1 8/9] aspeed: Add an AST1030 eval board

[Cédric Le Goater]

Hello Jamin,

On 3/22/22 03:51, Jamin Lin wrote:
> From: Steven Lee <steven_lee@aspeedtech.com>
>
> The image should be supplied with ELF binary.
> $ qemu-system-arm -M ast1030-evb -kernel zephyr.elf -nographic
>
> Signed-off-by: Troy Lee <troy_lee@aspeedtech.com>
> Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
> Signed-off-by: Steven Lee <steven_lee@aspeedtech.com>


I don't see the benefits of duplicating the Aspeed machine file.
The "ast1030-evb" machine can be directly added in aspeed.c with
a different machine init handler : aspeed_minibmc_machine_init().

If the need arise one day, we can consider the alternative.

Thanks,

C.


> ---
>   hw/arm/aspeed.c         |   2 +-
>   hw/arm/aspeed_minibmc.c | 129 ++++++++++++++++++++++++++++++++++++++++
>   hw/arm/meson.build      |   3 +-
>   include/hw/arm/aspeed.h |  25 ++++++++
>   4 files changed, 157 insertions(+), 2 deletions(-)
>   create mode 100644 hw/arm/aspeed_minibmc.c
>
> diff --git a/hw/arm/aspeed.c b/hw/arm/aspeed.c
> index d205384d98..e5a2e59aef 100644
> --- a/hw/arm/aspeed.c
> +++ b/hw/arm/aspeed.c
> @@ -276,7 +276,7 @@ static void write_boot_rom(DriveInfo *dinfo, hwaddr addr, 
> size_t rom_size,
>       rom_add_blob_fixed("aspeed.boot_rom", storage, rom_size, addr);
>   }
>   
> -static void aspeed_board_init_flashes(AspeedSMCState *s, const char *flashtype,
> +void aspeed_board_init_flashes(AspeedSMCState *s, const char *flashtype,
>                                         unsigned int count, int unit0)
>   {
>       int i;
> diff --git a/hw/arm/aspeed_minibmc.c b/hw/arm/aspeed_minibmc.c
> new file mode 100644
> index 0000000000..6a29475919
> --- /dev/null
> +++ b/hw/arm/aspeed_minibmc.c
> @@ -0,0 +1,129 @@
> +/*
> + * ASPEED AST1030 SoC
> + *
> + * Copyright (C) 2022 ASPEED Technology Inc.
> + *
> + * This code is licensed under the GPL version 2 or later.  See
> + * the COPYING file in the top-level directory.
> + */
> +
> +#include "qemu/osdep.h"
> +#include "qapi/error.h"
> +#include "hw/boards.h"
> +#include "hw/qdev-properties.h"
> +#include "hw/qdev-clock.h"
> +#include "qemu/error-report.h"
> +#include "hw/arm/aspeed.h"
> +#include "hw/arm/aspeed_soc.h"
> +#include "hw/arm/boot.h"
> +#include "hw/i2c/smbus_eeprom.h"
> +#include "hw/sensor/tmp105.h"
> +
> +#define AST1030_INTERNAL_FLASH_SIZE (1024 * 1024)
> +
> +struct AspeedMiniBmcMachineState {
> +    /* Private */
> +    MachineState parent_obj;
> +    /* Public */
> +
> +    AspeedSoCState soc;
> +    MemoryRegion ram_container;
> +    MemoryRegion max_ram;
> +    bool mmio_exec;
> +    char *fmc_model;
> +    char *spi_model;
> +};
> +
> +/* Main SYSCLK frequency in Hz (200MHz) */
> +#define SYSCLK_FRQ 200000000ULL
> +
> +static void aspeed_minibmc_machine_ast1030_evb_class_init(ObjectClass *oc,
> +                                                          void *data)
> +{
> +    MachineClass *mc = MACHINE_CLASS(oc);
> +    AspeedMiniBmcMachineClass *amc = ASPEED_MINIBMC_MACHINE_CLASS(oc);
> +
> +    mc->desc = "Aspeed AST1030 MiniBMC (Cortex-M4)";
> +    amc->soc_name = "ast1030-a1";
> +    amc->hw_strap1 = 0;
> +    amc->hw_strap2 = 0;
> +    mc->default_ram_size = 0;
> +    mc->default_cpus = mc->min_cpus = mc->max_cpus = 1;
> +    amc->fmc_model = "sst25vf032b";
> +    amc->spi_model = "sst25vf032b";
> +    amc->num_cs = 2;
> +}
> +
> +static void ast1030_machine_instance_init(Object *obj)
> +{
> +    ASPEED_MINIBMC_MACHINE(obj)->mmio_exec = false;
> +}
> +
> +static void aspeed_minibmc_machine_init(MachineState *machine)
> +{
> +    AspeedMiniBmcMachineState *bmc = ASPEED_MINIBMC_MACHINE(machine);
> +    AspeedMiniBmcMachineClass *amc = ASPEED_MINIBMC_MACHINE_GET_CLASS(machine);
> +    Clock *sysclk;
> +
> +    sysclk = clock_new(OBJECT(machine), "SYSCLK");
> +    clock_set_hz(sysclk, SYSCLK_FRQ);
> +
> +    object_initialize_child(OBJECT(machine), "soc", &bmc->soc, amc->soc_name);
> +    qdev_connect_clock_in(DEVICE(&bmc->soc), "sysclk", sysclk);
> +
> +    qdev_prop_set_uint32(DEVICE(&bmc->soc), "uart-default",
> +                         amc->uart_default);
> +    qdev_realize(DEVICE(&bmc->soc), NULL, &error_abort);
> +
> +    aspeed_board_init_flashes(&bmc->soc.fmc,
> +                              bmc->fmc_model ? bmc->fmc_model : amc->fmc_model,
> +                              amc->num_cs,
> +                              0);
> +
> +    aspeed_board_init_flashes(&bmc->soc.spi[0],
> +                              bmc->spi_model ? bmc->spi_model : amc->spi_model,
> +                              amc->num_cs, amc->num_cs);
> +
> +    aspeed_board_init_flashes(&bmc->soc.spi[1],
> +                              bmc->spi_model ? bmc->spi_model : amc->spi_model,
> +                              amc->num_cs, (amc->num_cs * 2));
> +
> +    if (amc->i2c_init) {
> +        amc->i2c_init(bmc);
> +    }
> +
> +    armv7m_load_kernel(ARM_CPU(first_cpu),
> +                       machine->kernel_filename,
> +                       AST1030_INTERNAL_FLASH_SIZE);
> +}
> +
> +static void aspeed_minibmc_machine_class_init(ObjectClass *oc, void *data)
> +{
> +    MachineClass *mc = MACHINE_CLASS(oc);
> +    AspeedMiniBmcMachineClass *amc = ASPEED_MINIBMC_MACHINE_CLASS(oc);
> +
> +    mc->init = aspeed_minibmc_machine_init;
> +    mc->no_floppy = 1;
> +    mc->no_cdrom = 1;
> +    mc->no_parallel = 1;
> +    mc->default_ram_id = "ram";
> +    amc->uart_default = ASPEED_DEV_UART5;
> +}
> +
> +static const TypeInfo aspeed_minibmc_machine_types[] = {
> +    {
> +        .name           = MACHINE_TYPE_NAME("ast1030-evb"),
> +        .parent         = TYPE_ASPEED_MINIBMC_MACHINE,
> +        .class_init     = aspeed_minibmc_machine_ast1030_evb_class_init,
> +    }, {
> +        .name           = TYPE_ASPEED_MINIBMC_MACHINE,
> +        .parent         = TYPE_MACHINE,
> +        .instance_size  = sizeof(AspeedMiniBmcMachineState),
> +        .instance_init  = ast1030_machine_instance_init,
> +        .class_size    = sizeof(AspeedMiniBmcMachineClass),
> +        .class_init    = aspeed_minibmc_machine_class_init,
> +        .abstract      = true,
> +    }
> +};
> +
> +DEFINE_TYPES(aspeed_minibmc_machine_types)
> diff --git a/hw/arm/meson.build b/hw/arm/meson.build
> index 362868c1a0..0431ca2948 100644
> --- a/hw/arm/meson.build
> +++ b/hw/arm/meson.build
> @@ -52,7 +52,8 @@ arm_ss.add(when: 'CONFIG_ASPEED_SOC', if_true: files(
>     'aspeed_soc.c',
>     'aspeed.c',
>     'aspeed_ast2600.c',
> -  'aspeed_ast1030.c'
> +  'aspeed_ast1030.c',
> +  'aspeed_minibmc.c'
>   ))
>   arm_ss.add(when: 'CONFIG_MPS2', if_true: files('mps2.c'))
>   arm_ss.add(when: 'CONFIG_MPS2', if_true: files('mps2-tz.c'))
> diff --git a/include/hw/arm/aspeed.h b/include/hw/arm/aspeed.h
> index cbeacb214c..7050366e64 100644
> --- a/include/hw/arm/aspeed.h
> +++ b/include/hw/arm/aspeed.h
> @@ -11,14 +11,21 @@
>   
>   #include "hw/boards.h"
>   #include "qom/object.h"
> +#include "hw/ssi/aspeed_smc.h"
>   
>   typedef struct AspeedMachineState AspeedMachineState;
> +typedef struct AspeedMiniBmcMachineState AspeedMiniBmcMachineState;
>   
>   #define TYPE_ASPEED_MACHINE       MACHINE_TYPE_NAME("aspeed")
> +#define TYPE_ASPEED_MINIBMC_MACHINE MACHINE_TYPE_NAME("aspeed-minibmc")
>   typedef struct AspeedMachineClass AspeedMachineClass;
>   DECLARE_OBJ_CHECKERS(AspeedMachineState, AspeedMachineClass,
>                        ASPEED_MACHINE, TYPE_ASPEED_MACHINE)
>   
> +typedef struct AspeedMiniBmcMachineClass AspeedMiniBmcMachineClass;
> +DECLARE_OBJ_CHECKERS(AspeedMiniBmcMachineState, AspeedMiniBmcMachineClass,
> +                     ASPEED_MINIBMC_MACHINE, TYPE_ASPEED_MINIBMC_MACHINE)
> +
>   #define ASPEED_MAC0_ON   (1 << 0)
>   #define ASPEED_MAC1_ON   (1 << 1)
>   #define ASPEED_MAC2_ON   (1 << 2)
> @@ -41,5 +48,23 @@ struct AspeedMachineClass {
>       uint32_t uart_default;
>   };
>   
> +struct AspeedMiniBmcMachineClass {
> +    MachineClass parent_obj;
> +
> +    const char *name;
> +    const char *desc;
> +    const char *soc_name;
> +    uint32_t hw_strap1;
> +    uint32_t hw_strap2;
> +    const char *fmc_model;
> +    const char *spi_model;
> +    uint32_t num_cs;
> +    uint32_t macs_mask;
> +    void (*i2c_init)(AspeedMiniBmcMachineState *bmc);
> +    uint32_t uart_default;
> +};
> +
> +void aspeed_board_init_flashes(AspeedSMCState *s, const char *flashtype,
> +                                      unsigned int count, int unit0);
>   
>   #endif