The new machine is a thin layer over the AST2400 ARM926-based SoC[1]. Between the minimal machine and the current SoC implementation there is enough functionality to boot an aspeed_defconfig Linux kernel to userspace. Nothing yet is specific to the Palmetto's BMC (other than using an AST2400 SoC), but creating specific machine types is preferable to a generic machine that doesn't match any particular hardware.
[1] http://www.aspeedtech.com/products.php?fPath=20&rId=376 Signed-off-by: Andrew Jeffery <and...@aj.id.au> --- Since v4: * Rename to hw/arm/palmetto-bmc.c, update functions, structs and strings Since v3: * Split the machine from the SoC implementation Since v2: * Implement a SOC model to move code out from the machine definition * Rework the machine to better use QOM * Include qemu/osdep.h * Revert back to qemu_log_mask(LOG_UNIMP, ...) in IO handlers hw/arm/Makefile.objs | 2 +- hw/arm/palmetto-bmc.c | 65 +++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 66 insertions(+), 1 deletion(-) create mode 100644 hw/arm/palmetto-bmc.c diff --git a/hw/arm/Makefile.objs b/hw/arm/Makefile.objs index f333b7f..954c9fe 100644 --- a/hw/arm/Makefile.objs +++ b/hw/arm/Makefile.objs @@ -16,4 +16,4 @@ obj-$(CONFIG_STM32F205_SOC) += stm32f205_soc.o obj-$(CONFIG_XLNX_ZYNQMP) += xlnx-zynqmp.o xlnx-ep108.o obj-$(CONFIG_FSL_IMX25) += fsl-imx25.o imx25_pdk.o obj-$(CONFIG_FSL_IMX31) += fsl-imx31.o kzm.o -obj-$(CONFIG_ASPEED_SOC) += ast2400.o +obj-$(CONFIG_ASPEED_SOC) += ast2400.o palmetto-bmc.o diff --git a/hw/arm/palmetto-bmc.c b/hw/arm/palmetto-bmc.c new file mode 100644 index 0000000..55d7419 --- /dev/null +++ b/hw/arm/palmetto-bmc.c @@ -0,0 +1,65 @@ +/* + * OpenPOWER Palmetto BMC + * + * Andrew Jeffery <and...@aj.id.au> + * + * Copyright 2016 IBM Corp. + * + * 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 "exec/address-spaces.h" +#include "hw/arm/arm.h" +#include "hw/arm/ast2400.h" +#include "hw/boards.h" + +static struct arm_boot_info palmetto_bmc_binfo = { + .loader_start = AST2400_SDRAM_BASE, + .board_id = 0, + .nb_cpus = 1, +}; + +typedef struct PalmettoBMCState { + AST2400State soc; + MemoryRegion ram; +} PalmettoBMCState; + +static void palmetto_bmc_init(MachineState *machine) +{ + PalmettoBMCState *bmc; + + bmc = g_new0(PalmettoBMCState, 1); + object_initialize(&bmc->soc, (sizeof(bmc->soc)), TYPE_AST2400); + object_property_add_child(OBJECT(machine), "soc", OBJECT(&bmc->soc), + &error_abort); + + memory_region_allocate_system_memory(&bmc->ram, NULL, "ram", ram_size); + memory_region_add_subregion(get_system_memory(), AST2400_SDRAM_BASE, + &bmc->ram); + object_property_add_const_link(OBJECT(&bmc->soc), "ram", OBJECT(&bmc->ram), + &error_abort); + object_property_set_bool(OBJECT(&bmc->soc), true, "realized", + &error_abort); + + palmetto_bmc_binfo.kernel_filename = machine->kernel_filename; + palmetto_bmc_binfo.initrd_filename = machine->initrd_filename; + palmetto_bmc_binfo.kernel_cmdline = machine->kernel_cmdline; + palmetto_bmc_binfo.ram_size = ram_size; + arm_load_kernel(ARM_CPU(first_cpu), &palmetto_bmc_binfo); +} + +static void palmetto_bmc_machine_init(MachineClass *mc) +{ + mc->desc = "OpenPOWER Palmetto BMC"; + mc->init = palmetto_bmc_init; + mc->max_cpus = 1; + mc->no_sdcard = 1; + mc->no_floppy = 1; + mc->no_cdrom = 1; + mc->no_sdcard = 1; + mc->no_parallel = 1; +} + +DEFINE_MACHINE("palmetto-bmc", palmetto_bmc_machine_init); -- 2.5.0