[Qemu-devel] [PATCH 13/17] lm32: EVR32 and uclinux BSP

[Michael Walle]

This patch adds support for the following two BSPs:
 - LM32 EVR32 BSP (as used by RTEMS)
 - uclinux BSP by Theobroma Systems

Signed-off-by: Michael Walle <address@hidden>
---
 Makefile.target                  |    3 +
 default-configs/lm32-softmmu.mak |    4 +
 hw/lm32_boards.c                 |  295 ++++++++++++++++++++++++++++++++++++++
 3 files changed, 302 insertions(+), 0 deletions(-)
 create mode 100644 default-configs/lm32-softmmu.mak
 create mode 100644 hw/lm32_boards.c

diff --git a/Makefile.target b/Makefile.target
index 185cc96..77d1ea3 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -247,6 +247,9 @@ obj-ppc-y += xilinx_timer.o
 obj-ppc-y += xilinx_uartlite.o
 obj-ppc-y += xilinx_ethlite.o
 
+# LM32 boards
+obj-lm32-y += lm32_boards.o
+
 # LM32 peripherals
 obj-lm32-y += lm32_pic.o
 obj-lm32-y += lm32_pic_cpu.o
diff --git a/default-configs/lm32-softmmu.mak b/default-configs/lm32-softmmu.mak
new file mode 100644
index 0000000..ab774a2
--- /dev/null
+++ b/default-configs/lm32-softmmu.mak
@@ -0,0 +1,4 @@
+# Default configuration for lm32-softmmu
+
+CONFIG_PTIMER=y
+CONFIG_PFLASH_CFI02=y
diff --git a/hw/lm32_boards.c b/hw/lm32_boards.c
new file mode 100644
index 0000000..c174c17
--- /dev/null
+++ b/hw/lm32_boards.c
@@ -0,0 +1,295 @@
+/*
+ *  QEMU models for LatticeMico32 uclinux and evr32 boards.
+ *
+ *  Copyright (c) 2010 Michael Walle <address@hidden>
+ *
+ * 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 "blockdev.h"
+#include "elf.h"
+#include "lm32_hwsetup.h"
+#include "lm32.h"
+
+struct reset_info {
+    CPUState *env;
+    uint32_t bootstrap_pc;
+    uint32_t flash_base;
+    uint32_t hwsetup_base;
+    uint32_t initrd_base;
+    uint32_t initrd_size;
+    uint32_t cmdline_base;
+};
+
+qemu_irq *lm32_pic_init_cpu(CPUState *env);
+
+static void main_cpu_reset(void *opaque)
+{
+    struct reset_info *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->hwsetup_base;
+    env->regs[R_R2] = reset_info->cmdline_base;
+    env->regs[R_R3] = reset_info->initrd_base;
+    env->regs[R_R4] = reset_info->initrd_base + reset_info->initrd_size;
+    env->eba = reset_info->flash_base;
+    env->deba = reset_info->flash_base;
+}
+
+static void lm32_evr_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;
+    DriveInfo *dinfo;
+    ram_addr_t phys_ram;
+    ram_addr_t phys_flash;
+    qemu_irq *cpu_irq, irq[32];
+    DeviceState *dev;
+    struct reset_info *reset_info;
+    int i;
+
+    /* memory map */
+    ram_addr_t flash_base    = 0x04000000;
+    size_t flash_sector_size = 256 * 1024;
+    size_t flash_size        = 32 * 1024 * 1024;
+    ram_addr_t ram_base      = 0x08000000;
+    size_t ram_size          = 64 * 1024 * 1024;
+    ram_addr_t timer0_base   = 0x80002000;
+    ram_addr_t uart0_base    = 0x80006000;
+    ram_addr_t timer1_base   = 0x8000a000;
+    int uart0_irq            = 0;
+    int timer0_irq           = 1;
+    int timer1_irq           = 3;
+
+    reset_info = qemu_mallocz(sizeof(struct reset_info));
+
+    if (cpu_model == NULL) {
+        cpu_model = "lm32-full";
+    }
+    env = cpu_init(cpu_model);
+    reset_info->env = env;
+
+    reset_info->flash_base = flash_base;
+
+    phys_ram = qemu_ram_alloc(NULL, "lm32_evr.sdram", ram_size);
+    cpu_register_physical_memory(ram_base, ram_size, phys_ram | IO_MEM_RAM);
+
+    phys_flash = qemu_ram_alloc(NULL, "lm32_evr.flash", flash_size);
+    dinfo = drive_get(IF_PFLASH, 0, 0);
+    /* Spansion S29NS128P */
+    pflash_cfi02_register(flash_base, phys_flash,
+                          dinfo ? dinfo->bdrv : NULL, flash_sector_size,
+                          flash_size / flash_sector_size, 1, 2,
+                          0x01, 0x7e, 0x43, 0x00, 0x555, 0x2aa, 1);
+
+    cpu_irq = lm32_pic_init_cpu(env);
+    dev = lm32_pic_init(env, *cpu_irq);
+    for (i = 0; i < 32; i++) {
+        irq[i] = qdev_get_gpio_in(dev, i);
+    }
+
+    sysbus_create_simple("lm32-uart", uart0_base, irq[uart0_irq]);
+    sysbus_create_simple("lm32-timer", timer0_base, irq[timer0_irq]);
+    sysbus_create_simple("lm32-timer", timer1_base, irq[timer1_irq]);
+
+    /* make sure juart isn't the first chardev */
+    lm32_juart_init(env);
+
+    reset_info->bootstrap_pc = flash_base;
+
+    if (kernel_filename) {
+        uint64_t entry;
+        int kernel_size;
+
+        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, ram_base,
+                                              ram_size);
+            reset_info->bootstrap_pc = ram_base;
+        }
+
+        if (kernel_size < 0) {
+            fprintf(stderr, "qemu: could not load kernel '%s'\n",
+                    kernel_filename);
+            exit(1);
+        }
+    }
+
+    qemu_register_reset(main_cpu_reset, reset_info);
+}
+
+static void lm32_uclinux_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;
+    DriveInfo *dinfo;
+    ram_addr_t phys_ram;
+    ram_addr_t phys_flash;
+    qemu_irq *cpu_irq, irq[32];
+    DeviceState *dev;
+    struct hwsetup *hw;
+    struct reset_info *reset_info;
+    int i;
+
+    /* memory map */
+    ram_addr_t flash_base    = 0x04000000;
+    size_t flash_sector_size = 256 * 1024;
+    size_t flash_size        = 32 * 1024 * 1024;
+    ram_addr_t ram_base      = 0x08000000;
+    size_t ram_size          = 64 * 1024 * 1024;
+    ram_addr_t uart0_base    = 0x80000000;
+    ram_addr_t timer0_base   = 0x80002000;
+    ram_addr_t timer1_base   = 0x80010000;
+    ram_addr_t timer2_base   = 0x80012000;
+    int uart0_irq            = 0;
+    int timer0_irq           = 1;
+    int timer1_irq           = 20;
+    int timer2_irq           = 21;
+    ram_addr_t hwsetup_base  = 0x0bffe000;
+    ram_addr_t cmdline_base  = 0x0bfff000;
+    ram_addr_t initrd_base   = 0x08400000;
+    size_t initrd_max        = 0x01000000;
+
+    reset_info = qemu_mallocz(sizeof(struct reset_info));
+
+    if (cpu_model == NULL) {
+        cpu_model = "lm32-full";
+    }
+    env = cpu_init(cpu_model);
+    reset_info->env = env;
+
+    reset_info->flash_base = flash_base;
+
+    phys_ram = qemu_ram_alloc(NULL, "lm32_uclinux.sdram", ram_size);
+    cpu_register_physical_memory(ram_base, ram_size, phys_ram | IO_MEM_RAM);
+
+    phys_flash = qemu_ram_alloc(NULL, "lm32_uclinux.flash", flash_size);
+    dinfo = drive_get(IF_PFLASH, 0, 0);
+    /* Spansion S29NS128P */
+    pflash_cfi02_register(flash_base, phys_flash,
+                          dinfo ? dinfo->bdrv : NULL, flash_sector_size,
+                          flash_size / flash_sector_size, 1, 2,
+                          0x01, 0x7e, 0x43, 0x00, 0x555, 0x2aa, 1);
+
+    cpu_irq = lm32_pic_init_cpu(env);
+    dev = lm32_pic_init(env, *cpu_irq);
+    for (i = 0; i < 32; i++) {
+        irq[i] = qdev_get_gpio_in(dev, i);
+    }
+
+    sysbus_create_simple("lm32-uart", uart0_base, irq[uart0_irq]);
+    sysbus_create_simple("lm32-timer", timer0_base, irq[timer0_irq]);
+    sysbus_create_simple("lm32-timer", timer1_base, irq[timer1_irq]);
+    sysbus_create_simple("lm32-timer", timer2_base, irq[timer2_irq]);
+
+    /* make sure juart isn't the first chardev */
+    lm32_juart_init(env);
+
+    reset_info->bootstrap_pc = flash_base;
+
+    if (kernel_filename) {
+        uint64_t entry;
+        int kernel_size;
+
+        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, ram_base,
+                                              ram_size);
+            reset_info->bootstrap_pc = ram_base;
+        }
+
+        if (kernel_size < 0) {
+            fprintf(stderr, "qemu: could not load kernel '%s'\n",
+                    kernel_filename);
+            exit(1);
+        }
+    }
+
+    /* generate a rom with the hardware description */
+    hw = hwsetup_init();
+    hwsetup_add_cpu(hw, "LM32", 75000000);
+    hwsetup_add_flash(hw, "flash", flash_base, flash_size);
+    hwsetup_add_ddr_sdram(hw, "ddr_sdram", ram_base, ram_size);
+    hwsetup_add_timer(hw, "timer0", timer0_base, timer0_irq);
+    hwsetup_add_timer(hw, "timer1_dev_only", timer1_base, timer1_irq);
+    hwsetup_add_timer(hw, "timer2_dev_only", timer2_base, timer2_irq);
+    hwsetup_add_uart(hw, "uart", uart0_base, uart0_irq);
+    hwsetup_add_trailer(hw);
+    hwsetup_create_rom(hw, hwsetup_base);
+    hwsetup_free(hw);
+
+    reset_info->hwsetup_base = (uint32_t)hwsetup_base;
+
+    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 lm32_evr_machine = {
+    .name = "lm32-evr",
+    .desc = "LatticeMico32 EVR32 eval system",
+    .init = lm32_evr_init,
+    .is_default = 1
+};
+
+static QEMUMachine lm32_uclinux_machine = {
+    .name = "lm32-uclinux",
+    .desc = "lm32 platform for uClinux and u-boot by Theobroma Systems",
+    .init = lm32_uclinux_init,
+    .is_default = 0
+};
+
+static void lm32_machine_init(void)
+{
+    qemu_register_machine(&lm32_uclinux_machine);
+    qemu_register_machine(&lm32_evr_machine);
+}
+
+machine_init(lm32_machine_init);
-- 
1.7.2.3