diff options
| -rw-r--r-- | Makefile.target | 1 | ||||
| -rw-r--r-- | default-configs/lm32-softmmu.mak | 1 | ||||
| -rw-r--r-- | hw/milkymist.c | 216 |
3 files changed, 218 insertions, 0 deletions
diff --git a/Makefile.target b/Makefile.target index 2a65e15..2f76714 100644 --- a/Makefile.target +++ b/Makefile.target @@ -260,6 +260,7 @@ obj-ppc-y += xilinx_ethlite.o # LM32 boards obj-lm32-y += lm32_boards.o +obj-lm32-y += milkymist.o # LM32 peripherals obj-lm32-y += lm32_pic.o diff --git a/default-configs/lm32-softmmu.mak b/default-configs/lm32-softmmu.mak index 3e7f57e..0d19974 100644 --- a/default-configs/lm32-softmmu.mak +++ b/default-configs/lm32-softmmu.mak @@ -1,5 +1,6 @@ # Default configuration for lm32-softmmu CONFIG_PTIMER=y +CONFIG_PFLASH_CFI01=y CONFIG_PFLASH_CFI02=y CONFIG_SD=y diff --git a/hw/milkymist.c b/hw/milkymist.c new file mode 100644 index 0000000..8defad8 --- /dev/null +++ b/hw/milkymist.c @@ -0,0 +1,216 @@ +/* + * QEMU model for the Milkymist board. + * + * Copyright (c) 2010 Michael Walle <michael@walle.cc> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see <http://www.gnu.org/licenses/>. + */ + +#include "sysbus.h" +#include "hw.h" +#include "net.h" +#include "flash.h" +#include "sysemu.h" +#include "devices.h" +#include "boards.h" +#include "loader.h" +#include "elf.h" +#include "blockdev.h" +#include "milkymist-hw.h" +#include "lm32.h" + +#define BIOS_FILENAME "mmone-bios.bin" +#define BIOS_OFFSET 0x00860000 +#define BIOS_SIZE (512*1024) +#define KERNEL_LOAD_ADDR 0x40000000 + +typedef struct { + CPUState *env; + target_phys_addr_t bootstrap_pc; + target_phys_addr_t flash_base; + target_phys_addr_t initrd_base; + size_t initrd_size; + target_phys_addr_t cmdline_base; +} ResetInfo; + +static void cpu_irq_handler(void *opaque, int irq, int level) +{ + CPUState *env = opaque; + + if (level) { + cpu_interrupt(env, CPU_INTERRUPT_HARD); + } else { + cpu_reset_interrupt(env, CPU_INTERRUPT_HARD); + } +} + +static void main_cpu_reset(void *opaque) +{ + ResetInfo *reset_info = opaque; + CPUState *env = reset_info->env; + + cpu_reset(env); + + /* init defaults */ + env->pc = reset_info->bootstrap_pc; + env->regs[R_R1] = reset_info->cmdline_base; + env->regs[R_R2] = reset_info->initrd_base; + env->regs[R_R3] = reset_info->initrd_base + reset_info->initrd_size; + env->eba = reset_info->flash_base; + env->deba = reset_info->flash_base; +} + +static void +milkymist_init(ram_addr_t ram_size_not_used, + const char *boot_device, + const char *kernel_filename, + const char *kernel_cmdline, + const char *initrd_filename, const char *cpu_model) +{ + CPUState *env; + int kernel_size; + DriveInfo *dinfo; + ram_addr_t phys_sdram; + ram_addr_t phys_flash; + qemu_irq irq[32], *cpu_irq; + int i; + char *bios_filename; + ResetInfo *reset_info; + + /* memory map */ + target_phys_addr_t flash_base = 0x00000000; + size_t flash_sector_size = 128 * 1024; + size_t flash_size = 32 * 1024 * 1024; + target_phys_addr_t sdram_base = 0x40000000; + size_t sdram_size = 128 * 1024 * 1024; + + target_phys_addr_t initrd_base = sdram_base + 0x1002000; + target_phys_addr_t cmdline_base = sdram_base + 0x1000000; + size_t initrd_max = sdram_size - 0x1002000; + + reset_info = qemu_mallocz(sizeof(ResetInfo)); + + if (cpu_model == NULL) { + cpu_model = "lm32-full"; + } + env = cpu_init(cpu_model); + reset_info->env = env; + + cpu_lm32_set_phys_msb_ignore(env, 1); + + phys_sdram = qemu_ram_alloc(NULL, "milkymist.sdram", sdram_size); + cpu_register_physical_memory(sdram_base, sdram_size, + phys_sdram | IO_MEM_RAM); + + phys_flash = qemu_ram_alloc(NULL, "milkymist.flash", flash_size); + dinfo = drive_get(IF_PFLASH, 0, 0); + /* Numonyx JS28F256J3F105 */ + pflash_cfi01_register(flash_base, phys_flash, + dinfo ? dinfo->bdrv : NULL, flash_sector_size, + flash_size / flash_sector_size, 2, + 0x00, 0x89, 0x00, 0x1d, 1); + + /* create irq lines */ + cpu_irq = qemu_allocate_irqs(cpu_irq_handler, env, 1); + env->pic_state = lm32_pic_init(*cpu_irq); + for (i = 0; i < 32; i++) { + irq[i] = qdev_get_gpio_in(env->pic_state, i); + } + + /* load bios rom */ + if (bios_name == NULL) { + bios_name = BIOS_FILENAME; + } + bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); + + if (bios_filename) { + load_image_targphys(bios_filename, BIOS_OFFSET, BIOS_SIZE); + } + + reset_info->bootstrap_pc = BIOS_OFFSET; + + /* if no kernel is given no valid bios rom is a fatal error */ + if (!kernel_filename && !dinfo && !bios_filename) { + fprintf(stderr, "qemu: could not load Milkymist One bios '%s'\n", + bios_name); + exit(1); + } + + milkymist_uart_create(0x60000000, irq[0], irq[1]); + milkymist_sysctl_create(0x60001000, irq[2], irq[3], irq[4], + 80000000, 0x10014d31, 0x0000041f, 0x00000001); + milkymist_hpdmc_create(0x60002000); + milkymist_vgafb_create(0x60003000, 0x40000000, 0x0fffffff); + milkymist_memcard_create(0x60004000); + milkymist_ac97_create(0x60005000, irq[5], irq[6], irq[7], irq[8]); + milkymist_pfpu_create(0x60006000, irq[9]); + milkymist_tmu2_create(0x60007000, irq[10]); + milkymist_minimac_create(0x60008000, irq[11], irq[12]); + milkymist_softusb_create(0x6000f000, irq[17], + 0x20000000, 0x1000, 0x20020000, 0x2000); + + /* make sure juart isn't the first chardev */ + env->juart_state = lm32_juart_init(); + + if (kernel_filename) { + uint64_t entry; + + /* Boots a kernel elf binary. */ + kernel_size = load_elf(kernel_filename, NULL, NULL, &entry, NULL, NULL, + 1, ELF_MACHINE, 0); + reset_info->bootstrap_pc = entry; + + if (kernel_size < 0) { + kernel_size = load_image_targphys(kernel_filename, sdram_base, + sdram_size); + reset_info->bootstrap_pc = sdram_base; + } + + if (kernel_size < 0) { + fprintf(stderr, "qemu: could not load kernel '%s'\n", + kernel_filename); + exit(1); + } + } + + if (kernel_cmdline && strlen(kernel_cmdline)) { + pstrcpy_targphys("cmdline", cmdline_base, TARGET_PAGE_SIZE, + kernel_cmdline); + reset_info->cmdline_base = (uint32_t)cmdline_base; + } + + if (initrd_filename) { + size_t initrd_size; + initrd_size = load_image_targphys(initrd_filename, initrd_base, + initrd_max); + reset_info->initrd_base = (uint32_t)initrd_base; + reset_info->initrd_size = (uint32_t)initrd_size; + } + + qemu_register_reset(main_cpu_reset, reset_info); +} + +static QEMUMachine milkymist_machine = { + .name = "milkymist", + .desc = "Milkymist One", + .init = milkymist_init, + .is_default = 0 +}; + +static void milkymist_machine_init(void) +{ + qemu_register_machine(&milkymist_machine); +} + +machine_init(milkymist_machine_init); |