ARM: Samsung exynos4210-based boards emulation

Add initial support of NURI and SMDKC210 boards

Signed-off-by: Evgeny Voevodin <e.voevodin@samsung.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

3 files changed, 384 insertions, 0 deletions

diff --git a/hw/exynos4210.c b/hw/exynos4210.c
new file mode 100644
index 0000000..5b1e24c
--- /dev/null
+++ b/hw/exynos4210.c
@@ -0,0 +1,191 @@
+/*
+ *  Samsung exynos4210 SoC emulation
+ *
+ *  Copyright (c) 2011 Samsung Electronics Co., Ltd. All rights reserved.
+ *    Maksim Kozlov <m.kozlov@samsung.com>
+ *    Evgeny Voevodin <e.voevodin@samsung.com>
+ *    Igor Mitsyanko  <i.mitsyanko@samsung.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify it
+ *  under the terms of the GNU General Public License as published by the
+ *  Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program 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 General Public License
+ *  for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "boards.h"
+#include "sysemu.h"
+#include "sysbus.h"
+#include "arm-misc.h"
+#include "exynos4210.h"
+
+#define EXYNOS4210_CHIPID_ADDR         0x10000000
+
+/* External GIC */
+#define EXYNOS4210_EXT_GIC_CPU_BASE_ADDR    0x10480000
+#define EXYNOS4210_EXT_GIC_DIST_BASE_ADDR   0x10490000
+
+/* Combiner */
+#define EXYNOS4210_EXT_COMBINER_BASE_ADDR   0x10440000
+#define EXYNOS4210_INT_COMBINER_BASE_ADDR   0x10448000
+
+static uint8_t chipid_and_omr[] = { 0x11, 0x02, 0x21, 0x43,
+                                    0x09, 0x00, 0x00, 0x00 };
+
+Exynos4210State *exynos4210_init(MemoryRegion *system_mem,
+        unsigned long ram_size)
+{
+    qemu_irq cpu_irq[4];
+    int n;
+    Exynos4210State *s = g_new(Exynos4210State, 1);
+    qemu_irq *irqp;
+    qemu_irq gate_irq[EXYNOS4210_IRQ_GATE_NINPUTS];
+    unsigned long mem_size;
+    DeviceState *dev;
+    SysBusDevice *busdev;
+
+    for (n = 0; n < EXYNOS4210_NCPUS; n++) {
+        s->env[n] = cpu_init("cortex-a9");
+        if (!s->env[n]) {
+            fprintf(stderr, "Unable to find CPU %d definition\n", n);
+            exit(1);
+        }
+        /* Create PIC controller for each processor instance */
+        irqp = arm_pic_init_cpu(s->env[n]);
+
+        /*
+         * Get GICs gpio_in cpu_irq to connect a combiner to them later.
+         * Use only IRQ for a while.
+         */
+        cpu_irq[n] = irqp[ARM_PIC_CPU_IRQ];
+    }
+
+    /*** IRQs ***/
+
+    s->irq_table = exynos4210_init_irq(&s->irqs);
+
+    /* IRQ Gate */
+    dev = qdev_create(NULL, "exynos4210.irq_gate");
+    qdev_init_nofail(dev);
+    /* Get IRQ Gate input in gate_irq */
+    for (n = 0; n < EXYNOS4210_IRQ_GATE_NINPUTS; n++) {
+        gate_irq[n] = qdev_get_gpio_in(dev, n);
+    }
+    busdev = sysbus_from_qdev(dev);
+    /* Connect IRQ Gate output to cpu_irq */
+    for (n = 0; n < EXYNOS4210_NCPUS; n++) {
+        sysbus_connect_irq(busdev, n, cpu_irq[n]);
+    }
+
+    /* Private memory region and Internal GIC */
+    dev = qdev_create(NULL, "a9mpcore_priv");
+    qdev_prop_set_uint32(dev, "num-cpu", EXYNOS4210_NCPUS);
+    qdev_init_nofail(dev);
+    busdev = sysbus_from_qdev(dev);
+    sysbus_mmio_map(busdev, 0, EXYNOS4210_SMP_PRIVATE_BASE_ADDR);
+    for (n = 0; n < EXYNOS4210_NCPUS; n++) {
+        sysbus_connect_irq(busdev, n, gate_irq[n * 2]);
+    }
+    for (n = 0; n < EXYNOS4210_INT_GIC_NIRQ; n++) {
+        s->irqs.int_gic_irq[n] = qdev_get_gpio_in(dev, n);
+    }
+
+    /* Cache controller */
+    sysbus_create_simple("l2x0", EXYNOS4210_L2X0_BASE_ADDR, NULL);
+
+    /* External GIC */
+    dev = qdev_create(NULL, "exynos4210.gic");
+    qdev_prop_set_uint32(dev, "num-cpu", EXYNOS4210_NCPUS);
+    qdev_init_nofail(dev);
+    busdev = sysbus_from_qdev(dev);
+    /* Map CPU interface */
+    sysbus_mmio_map(busdev, 0, EXYNOS4210_EXT_GIC_CPU_BASE_ADDR);
+    /* Map Distributer interface */
+    sysbus_mmio_map(busdev, 1, EXYNOS4210_EXT_GIC_DIST_BASE_ADDR);
+    for (n = 0; n < EXYNOS4210_NCPUS; n++) {
+        sysbus_connect_irq(busdev, n, gate_irq[n * 2 + 1]);
+    }
+    for (n = 0; n < EXYNOS4210_EXT_GIC_NIRQ; n++) {
+        s->irqs.ext_gic_irq[n] = qdev_get_gpio_in(dev, n);
+    }
+
+    /* Internal Interrupt Combiner */
+    dev = qdev_create(NULL, "exynos4210.combiner");
+    qdev_init_nofail(dev);
+    busdev = sysbus_from_qdev(dev);
+    for (n = 0; n < EXYNOS4210_MAX_INT_COMBINER_OUT_IRQ; n++) {
+        sysbus_connect_irq(busdev, n, s->irqs.int_gic_irq[n]);
+    }
+    exynos4210_combiner_get_gpioin(&s->irqs, dev, 0);
+    sysbus_mmio_map(busdev, 0, EXYNOS4210_INT_COMBINER_BASE_ADDR);
+
+    /* External Interrupt Combiner */
+    dev = qdev_create(NULL, "exynos4210.combiner");
+    qdev_prop_set_uint32(dev, "external", 1);
+    qdev_init_nofail(dev);
+    busdev = sysbus_from_qdev(dev);
+    for (n = 0; n < EXYNOS4210_MAX_INT_COMBINER_OUT_IRQ; n++) {
+        sysbus_connect_irq(busdev, n, s->irqs.ext_gic_irq[n]);
+    }
+    exynos4210_combiner_get_gpioin(&s->irqs, dev, 1);
+    sysbus_mmio_map(busdev, 0, EXYNOS4210_EXT_COMBINER_BASE_ADDR);
+
+    /* Initialize board IRQs. */
+    exynos4210_init_board_irqs(&s->irqs);
+
+    /*** Memory ***/
+
+    /* Chip-ID and OMR */
+    memory_region_init_ram_ptr(&s->chipid_mem, "exynos4210.chipid",
+            sizeof(chipid_and_omr), chipid_and_omr);
+    memory_region_set_readonly(&s->chipid_mem, true);
+    memory_region_add_subregion(system_mem, EXYNOS4210_CHIPID_ADDR,
+                                &s->chipid_mem);
+
+    /* Internal ROM */
+    memory_region_init_ram(&s->irom_mem, "exynos4210.irom",
+                           EXYNOS4210_IROM_SIZE);
+    memory_region_set_readonly(&s->irom_mem, true);
+    memory_region_add_subregion(system_mem, EXYNOS4210_IROM_BASE_ADDR,
+                                &s->irom_mem);
+    /* mirror of iROM */
+    memory_region_init_alias(&s->irom_alias_mem, "exynos4210.irom_alias",
+                             &s->irom_mem,
+                             EXYNOS4210_IROM_BASE_ADDR,
+                             EXYNOS4210_IROM_SIZE);
+    memory_region_set_readonly(&s->irom_alias_mem, true);
+    memory_region_add_subregion(system_mem, EXYNOS4210_IROM_MIRROR_BASE_ADDR,
+                                &s->irom_alias_mem);
+
+    /* Internal RAM */
+    memory_region_init_ram(&s->iram_mem, "exynos4210.iram",
+                           EXYNOS4210_IRAM_SIZE);
+    vmstate_register_ram_global(&s->iram_mem);
+    memory_region_add_subregion(system_mem, EXYNOS4210_IRAM_BASE_ADDR,
+                                &s->iram_mem);
+
+    /* DRAM */
+    mem_size = ram_size;
+    if (mem_size > EXYNOS4210_DRAM_MAX_SIZE) {
+        memory_region_init_ram(&s->dram1_mem, "exynos4210.dram1",
+                mem_size - EXYNOS4210_DRAM_MAX_SIZE);
+        vmstate_register_ram_global(&s->dram1_mem);
+        memory_region_add_subregion(system_mem, EXYNOS4210_DRAM1_BASE_ADDR,
+                &s->dram1_mem);
+        mem_size = EXYNOS4210_DRAM_MAX_SIZE;
+    }
+    memory_region_init_ram(&s->dram0_mem, "exynos4210.dram0", mem_size);
+    vmstate_register_ram_global(&s->dram0_mem);
+    memory_region_add_subregion(system_mem, EXYNOS4210_DRAM0_BASE_ADDR,
+            &s->dram0_mem);
+
+    return s;
+}
diff --git a/hw/exynos4210.h b/hw/exynos4210.h
index ef4732f..0026a52 100644
--- a/hw/exynos4210.h
+++ b/hw/exynos4210.h
@@ -31,6 +31,28 @@
 
 #define EXYNOS4210_NCPUS                    2
 
+#define EXYNOS4210_DRAM0_BASE_ADDR          0x40000000
+#define EXYNOS4210_DRAM1_BASE_ADDR          0xa0000000
+#define EXYNOS4210_DRAM_MAX_SIZE            0x60000000  /* 1.5 GB */
+
+#define EXYNOS4210_IROM_BASE_ADDR           0x00000000
+#define EXYNOS4210_IROM_SIZE                0x00010000  /* 64 KB */
+#define EXYNOS4210_IROM_MIRROR_BASE_ADDR    0x02000000
+#define EXYNOS4210_IROM_MIRROR_SIZE         0x00010000  /* 64 KB */
+
+#define EXYNOS4210_IRAM_BASE_ADDR           0x02020000
+#define EXYNOS4210_IRAM_SIZE                0x00020000  /* 128 KB */
+
+/* Secondary CPU startup code is in IROM memory */
+#define EXYNOS4210_SMP_BOOT_ADDR            EXYNOS4210_IROM_BASE_ADDR
+#define EXYNOS4210_SMP_BOOT_SIZE            0x1000
+#define EXYNOS4210_BASE_BOOT_ADDR           EXYNOS4210_DRAM0_BASE_ADDR
+/* Secondary CPU polling address to get loader start from */
+#define EXYNOS4210_SECOND_CPU_BOOTREG       0x10020814
+
+#define EXYNOS4210_SMP_PRIVATE_BASE_ADDR    0x10500000
+#define EXYNOS4210_L2X0_BASE_ADDR           0x10502000
+
 /*
  * exynos4210 IRQ subsystem stub definitions.
  */
@@ -60,6 +82,24 @@ typedef struct Exynos4210Irq {
     qemu_irq board_irqs[EXYNOS4210_MAX_INT_COMBINER_IN_IRQ];
 } Exynos4210Irq;
 
+typedef struct Exynos4210State {
+    CPUState * env[EXYNOS4210_NCPUS];
+    Exynos4210Irq irqs;
+    qemu_irq *irq_table;
+
+    MemoryRegion chipid_mem;
+    MemoryRegion iram_mem;
+    MemoryRegion irom_mem;
+    MemoryRegion irom_alias_mem;
+    MemoryRegion dram0_mem;
+    MemoryRegion dram1_mem;
+    MemoryRegion boot_secondary;
+    MemoryRegion bootreg_mem;
+} Exynos4210State;
+
+Exynos4210State *exynos4210_init(MemoryRegion *system_mem,
+        unsigned long ram_size);
+
 /* Initialize exynos4210 IRQ subsystem stub */
 qemu_irq *exynos4210_init_irq(Exynos4210Irq *env);
 
diff --git a/hw/exynos4_boards.c b/hw/exynos4_boards.c
new file mode 100644
index 0000000..767dc45
--- /dev/null
+++ b/hw/exynos4_boards.c
@@ -0,0 +1,153 @@
+/*
+ *  Samsung exynos4 SoC based boards emulation
+ *
+ *  Copyright (c) 2011 Samsung Electronics Co., Ltd. All rights reserved.
+ *    Maksim Kozlov <m.kozlov@samsung.com>
+ *    Evgeny Voevodin <e.voevodin@samsung.com>
+ *    Igor Mitsyanko  <i.mitsyanko@samsung.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify it
+ *  under the terms of the GNU General Public License as published by the
+ *  Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program 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 General Public License
+ *  for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "sysemu.h"
+#include "sysbus.h"
+#include "arm-misc.h"
+#include "exec-memory.h"
+#include "exynos4210.h"
+#include "boards.h"
+
+#undef DEBUG
+
+//#define DEBUG
+
+#ifdef DEBUG
+    #undef PRINT_DEBUG
+    #define  PRINT_DEBUG(fmt, args...) \
+        do { \
+            fprintf(stderr, "  [%s:%d]   "fmt, __func__, __LINE__, ##args); \
+        } while (0)
+#else
+    #define  PRINT_DEBUG(fmt, args...)  do {} while (0)
+#endif
+
+typedef enum Exynos4BoardType {
+    EXYNOS4_BOARD_NURI,
+    EXYNOS4_BOARD_SMDKC210,
+    EXYNOS4_NUM_OF_BOARDS
+} Exynos4BoardType;
+
+static int exynos4_board_id[EXYNOS4_NUM_OF_BOARDS] = {
+    [EXYNOS4_BOARD_NURI]     = 0xD33,
+    [EXYNOS4_BOARD_SMDKC210] = 0xB16,
+};
+
+static int exynos4_board_smp_bootreg_addr[EXYNOS4_NUM_OF_BOARDS] = {
+    [EXYNOS4_BOARD_NURI]     = EXYNOS4210_SECOND_CPU_BOOTREG,
+    [EXYNOS4_BOARD_SMDKC210] = EXYNOS4210_SECOND_CPU_BOOTREG,
+};
+
+static unsigned long exynos4_board_ram_size[EXYNOS4_NUM_OF_BOARDS] = {
+    [EXYNOS4_BOARD_NURI]     = 0x40000000,
+    [EXYNOS4_BOARD_SMDKC210] = 0x40000000,
+};
+
+static struct arm_boot_info exynos4_board_binfo = {
+    .loader_start     = EXYNOS4210_BASE_BOOT_ADDR,
+    .smp_loader_start = EXYNOS4210_SMP_BOOT_ADDR,
+    .nb_cpus          = EXYNOS4210_NCPUS,
+};
+
+static QEMUMachine exynos4_machines[EXYNOS4_NUM_OF_BOARDS];
+
+static Exynos4210State *exynos4_boards_init_common(
+        const char *kernel_filename,
+        const char *kernel_cmdline,
+        const char *initrd_filename,
+        Exynos4BoardType board_type)
+{
+    if (smp_cpus != EXYNOS4210_NCPUS) {
+        fprintf(stderr, "%s board supports only %d CPU cores. Ignoring smp_cpus"
+                " value.\n",
+                exynos4_machines[board_type].name,
+                exynos4_machines[board_type].max_cpus);
+    }
+
+    exynos4_board_binfo.ram_size = exynos4_board_ram_size[board_type];
+    exynos4_board_binfo.board_id = exynos4_board_id[board_type];
+    exynos4_board_binfo.smp_bootreg_addr =
+            exynos4_board_smp_bootreg_addr[board_type];
+    exynos4_board_binfo.kernel_filename = kernel_filename;
+    exynos4_board_binfo.initrd_filename = initrd_filename;
+    exynos4_board_binfo.kernel_cmdline = kernel_cmdline;
+    exynos4_board_binfo.smp_priv_base = EXYNOS4210_SMP_PRIVATE_BASE_ADDR;
+
+    PRINT_DEBUG("\n ram_size: %luMiB [0x%08lx]\n"
+            " kernel_filename: %s\n"
+            " kernel_cmdline: %s\n"
+            " initrd_filename: %s\n",
+            exynos4_board_ram_size[board_type] / 1048576,
+            exynos4_board_ram_size[board_type],
+            kernel_filename,
+            kernel_cmdline,
+            initrd_filename);
+
+    return exynos4210_init(get_system_memory(),
+            exynos4_board_ram_size[board_type]);
+}
+
+static void nuri_init(ram_addr_t ram_size,
+        const char *boot_device,
+        const char *kernel_filename, const char *kernel_cmdline,
+        const char *initrd_filename, const char *cpu_model)
+{
+    exynos4_boards_init_common(kernel_filename, kernel_cmdline,
+                initrd_filename, EXYNOS4_BOARD_NURI);
+
+    arm_load_kernel(first_cpu, &exynos4_board_binfo);
+}
+
+static void smdkc210_init(ram_addr_t ram_size,
+        const char *boot_device,
+        const char *kernel_filename, const char *kernel_cmdline,
+        const char *initrd_filename, const char *cpu_model)
+{
+    exynos4_boards_init_common(kernel_filename, kernel_cmdline,
+                initrd_filename, EXYNOS4_BOARD_SMDKC210);
+
+    arm_load_kernel(first_cpu, &exynos4_board_binfo);
+}
+
+static QEMUMachine exynos4_machines[EXYNOS4_NUM_OF_BOARDS] = {
+    [EXYNOS4_BOARD_NURI] = {
+        .name = "nuri",
+        .desc = "Samsung NURI board (Exynos4210)",
+        .init = nuri_init,
+        .max_cpus = EXYNOS4210_NCPUS,
+    },
+    [EXYNOS4_BOARD_SMDKC210] = {
+        .name = "smdkc210",
+        .desc = "Samsung SMDKC210 board (Exynos4210)",
+        .init = smdkc210_init,
+        .max_cpus = EXYNOS4210_NCPUS,
+    },
+};
+
+static void exynos4_machine_init(void)
+{
+    qemu_register_machine(&exynos4_machines[EXYNOS4_BOARD_NURI]);
+    qemu_register_machine(&exynos4_machines[EXYNOS4_BOARD_SMDKC210]);
+}
+
+machine_init(exynos4_machine_init);