lm32: EVR32 and uclinux BSP

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 <michael@walle.cc>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>

3 files changed, 312 insertions, 0 deletions

diff --git a/Makefile.target b/Makefile.target
index 35cca55a5b..f0df98e4fc 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_juart.o
diff --git a/default-configs/lm32-softmmu.mak b/default-configs/lm32-softmmu.mak
new file mode 100644
index 0000000000..ab774a2509
--- /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 0000000000..85190f0bfa
--- /dev/null
+++ b/hw/lm32_boards.c
@@ -0,0 +1,305 @@
+/*
+ *  QEMU models for LatticeMico32 uclinux and evr32 boards.
+ *
+ *  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 "blockdev.h"
+#include "elf.h"
+#include "lm32_hwsetup.h"
+#include "lm32.h"
+
+typedef struct {
+    CPUState *env;
+    target_phys_addr_t bootstrap_pc;
+    target_phys_addr_t flash_base;
+    target_phys_addr_t hwsetup_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 = (uint32_t)reset_info->bootstrap_pc;
+    env->regs[R_R1] = (uint32_t)reset_info->hwsetup_base;
+    env->regs[R_R2] = (uint32_t)reset_info->cmdline_base;
+    env->regs[R_R3] = (uint32_t)reset_info->initrd_base;
+    env->regs[R_R4] = (uint32_t)(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];
+    ResetInfo *reset_info;
+    int i;
+
+    /* memory map */
+    target_phys_addr_t flash_base  = 0x04000000;
+    size_t flash_sector_size       = 256 * 1024;
+    size_t flash_size              = 32 * 1024 * 1024;
+    target_phys_addr_t ram_base    = 0x08000000;
+    size_t ram_size                = 64 * 1024 * 1024;
+    target_phys_addr_t timer0_base = 0x80002000;
+    target_phys_addr_t uart0_base  = 0x80006000;
+    target_phys_addr_t timer1_base = 0x8000a000;
+    int uart0_irq                  = 0;
+    int timer0_irq                 = 1;
+    int timer1_irq                 = 3;
+
+    reset_info = qemu_mallocz(sizeof(ResetInfo));
+
+    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);
+
+    /* 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);
+    }
+
+    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 */
+    env->juart_state = lm32_juart_init();
+
+    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];
+    HWSetup *hw;
+    ResetInfo *reset_info;
+    int i;
+
+    /* memory map */
+    target_phys_addr_t flash_base   = 0x04000000;
+    size_t flash_sector_size        = 256 * 1024;
+    size_t flash_size               = 32 * 1024 * 1024;
+    target_phys_addr_t ram_base     = 0x08000000;
+    size_t ram_size                 = 64 * 1024 * 1024;
+    target_phys_addr_t uart0_base   = 0x80000000;
+    target_phys_addr_t timer0_base  = 0x80002000;
+    target_phys_addr_t timer1_base  = 0x80010000;
+    target_phys_addr_t timer2_base  = 0x80012000;
+    int uart0_irq                   = 0;
+    int timer0_irq                  = 1;
+    int timer1_irq                  = 20;
+    int timer2_irq                  = 21;
+    target_phys_addr_t hwsetup_base = 0x0bffe000;
+    target_phys_addr_t cmdline_base = 0x0bfff000;
+    target_phys_addr_t initrd_base  = 0x08400000;
+    size_t initrd_max               = 0x01000000;
+
+    reset_info = qemu_mallocz(sizeof(ResetInfo));
+
+    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);
+
+    /* 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);
+    }
+
+    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 */
+    env->juart_state = lm32_juart_init();
+
+    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 = hwsetup_base;
+
+    if (kernel_cmdline && strlen(kernel_cmdline)) {
+        pstrcpy_targphys("cmdline", cmdline_base, TARGET_PAGE_SIZE,
+                kernel_cmdline);
+        reset_info->cmdline_base = cmdline_base;
+    }
+
+    if (initrd_filename) {
+        size_t initrd_size;
+        initrd_size = load_image_targphys(initrd_filename, initrd_base,
+                initrd_max);
+        reset_info->initrd_base = initrd_base;
+        reset_info->initrd_size = 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);