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hw/arm: Add palmetto-bmc machine 

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 <andrew@aj.id.au>
Message-id: 1458096317-25223-5-git-send-email-andrew@aj.id.au
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Andrew Jeffery 2016-03-16 17:06:01 +00:00 committed by Peter Maydell
parent 43e3346e43
commit 327d8e4ed2
2 changed files with 66 additions and 1 deletions
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2
hw/arm/Makefile.objs
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@ -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

65
hw/arm/palmetto-bmc.c Normal file
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@ -0,0 +1,65 @@
/*
* OpenPOWER Palmetto BMC
*
* Andrew Jeffery <andrew@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);