ETRAX: Add a model for the axis devboard88 machine.

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


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6197 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 276 insertions, 0 deletions

diff --git a/hw/axis_dev88.c b/hw/axis_dev88.c
new file mode 100644
index 000000000..b16b15d1b
--- /dev/null
+++ b/hw/axis_dev88.c
@@ -0,0 +1,276 @@
+/*
+ * QEMU model for the AXIS devboard 88.
+ *
+ * Copyright (c) 2009 Edgar E. Iglesias, Axis Communications AB.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include <time.h>
+#include <sys/time.h>
+#include "hw.h"
+#include "net.h"
+#include "flash.h"
+#include "sysemu.h"
+#include "devices.h"
+#include "boards.h"
+
+#include "etraxfs.h"
+
+#define D(x)
+#define DNAND(x)
+
+struct nand_state_t
+{
+    struct nand_flash_s *nand;
+    unsigned int rdy:1;
+    unsigned int ale:1;
+    unsigned int cle:1;
+    unsigned int ce:1;
+};
+
+static struct nand_state_t nand_state;
+static uint32_t nand_readl (void *opaque, target_phys_addr_t addr)
+{
+    struct nand_state_t *s = opaque;
+    uint32_t r;
+    int rdy;
+
+    r = nand_getio(s->nand);
+    nand_getpins(s->nand, &rdy);
+    s->rdy = rdy;
+
+    DNAND(printf("%s addr=%x r=%x\n", __func__, addr, r));
+    return r;
+}
+
+static void
+nand_writel (void *opaque, target_phys_addr_t addr, uint32_t value)
+{
+    struct nand_state_t *s = opaque;
+    int rdy;
+
+    DNAND(printf("%s addr=%x v=%x\n", __func__, addr, value));
+    nand_setpins(s->nand, s->cle, s->ale, s->ce, 1, 0);
+    nand_setio(s->nand, value);
+    nand_getpins(s->nand, &rdy);
+    s->rdy = rdy;
+}
+
+static CPUReadMemoryFunc *nand_read[] = {
+    &nand_readl,
+    &nand_readl,
+    &nand_readl,
+};
+
+static CPUWriteMemoryFunc *nand_write[] = {
+    &nand_writel,
+    &nand_writel,
+    &nand_writel,
+};
+
+#define RW_PA_DOUT 0
+#define R_PA_DIN   1
+#define RW_PA_OE   2
+struct gpio_state_t
+{
+    struct nand_state_t *nand;
+    uint32_t regs[0x5c / 4];
+} gpio_state;
+
+static uint32_t gpio_readl (void *opaque, target_phys_addr_t addr)
+{
+    struct gpio_state_t *s = opaque;
+    uint32_t r = 0;
+
+    addr >>= 2;
+    switch (addr)
+    {
+        case R_PA_DIN:
+            r = s->regs[RW_PA_DOUT] & s->regs[RW_PA_OE];
+
+            /* Encode pins from the nand.  */
+            r |= s->nand->rdy << 7;
+            break;
+        default:
+            r = s->regs[addr];
+            break;
+    }
+    return r;
+    D(printf("%s %x=%x\n", __func__, addr, r));
+}
+
+static void gpio_writel (void *opaque, target_phys_addr_t addr, uint32_t value)
+{
+    struct gpio_state_t *s = opaque;
+    D(printf("%s %x=%x\n", __func__, addr, value));
+
+    addr >>= 2;
+    switch (addr)
+    {
+        case RW_PA_DOUT:
+            /* Decode nand pins.  */
+            s->nand->ale = !!(value & (1 << 6));
+            s->nand->cle = !!(value & (1 << 5));
+            s->nand->ce  = !!(value & (1 << 4));
+
+            s->regs[addr] = value;
+            break;
+        default:
+            s->regs[addr] = value;
+            break;
+    }
+}
+
+static CPUReadMemoryFunc *gpio_read[] = {
+    NULL, NULL,
+    &gpio_readl,
+};
+
+static CPUWriteMemoryFunc *gpio_write[] = {
+    NULL, NULL,
+    &gpio_writel,
+};
+
+#define INTMEM_SIZE (128 * 1024)
+
+static uint32_t bootstrap_pc;
+static void main_cpu_reset(void *opaque)
+{
+    CPUState *env = opaque;
+    cpu_reset(env);
+
+    env->pc = bootstrap_pc;
+}
+
+static
+void axisdev88_init (ram_addr_t ram_size, int vga_ram_size,
+                     const char *boot_device, DisplayState *ds,
+                     const char *kernel_filename, const char *kernel_cmdline,
+                     const char *initrd_filename, const char *cpu_model)
+{
+    CPUState *env;
+    struct etraxfs_pic *pic;
+    void *etraxfs_dmac;
+    struct etraxfs_dma_client *eth[2] = {NULL, NULL};
+    int kernel_size;
+    int i;
+    int nand_regs;
+    int gpio_regs;
+    ram_addr_t phys_ram;
+    ram_addr_t phys_intmem;
+
+    /* init CPUs */
+    if (cpu_model == NULL) {
+        cpu_model = "crisv32";
+    }
+    env = cpu_init(cpu_model);
+    qemu_register_reset(main_cpu_reset, env);
+
+    /* allocate RAM */
+    phys_ram = qemu_ram_alloc(ram_size);
+    cpu_register_physical_memory(0x40000000, ram_size, phys_ram | IO_MEM_RAM);
+
+    /* The ETRAX-FS has 128Kb on chip ram, the docs refer to it as the 
+       internal memory.  */
+    phys_intmem = qemu_ram_alloc(INTMEM_SIZE);
+    cpu_register_physical_memory(0x38000000, INTMEM_SIZE,
+                                 phys_intmem | IO_MEM_RAM);
+
+
+      /* Attach a NAND flash to CS1.  */
+    nand_state.nand = nand_init(NAND_MFR_STMICRO, 0xf1);
+    nand_regs = cpu_register_io_memory(0, nand_read, nand_write, &nand_state);
+    cpu_register_physical_memory(0x10000000, 0x05000000, nand_regs);
+
+    gpio_state.nand = &nand_state;
+    gpio_regs = cpu_register_io_memory(0, gpio_read, gpio_write, &gpio_state);
+    cpu_register_physical_memory(0x3001a000, 0x1c, gpio_regs);
+
+
+    pic = etraxfs_pic_init(env, 0x3001c000);
+    etraxfs_dmac = etraxfs_dmac_init(env, 0x30000000, 10);
+    for (i = 0; i < 10; i++) {
+        /* On ETRAX, odd numbered channels are inputs.  */
+        etraxfs_dmac_connect(etraxfs_dmac, i, pic->irq + 7 + i, i & 1);
+    }
+
+    /* Add the two ethernet blocks.  */
+    eth[0] = etraxfs_eth_init(&nd_table[0], env, pic->irq + 25, 0x30034000);
+    if (nb_nics > 1)
+        eth[1] = etraxfs_eth_init(&nd_table[1], env, pic->irq + 26, 0x30036000);
+
+    /* The DMA Connector block is missing, hardwire things for now.  */
+    etraxfs_dmac_connect_client(etraxfs_dmac, 0, eth[0]);
+    etraxfs_dmac_connect_client(etraxfs_dmac, 1, eth[0] + 1);
+    if (eth[1]) {
+        etraxfs_dmac_connect_client(etraxfs_dmac, 6, eth[1]);
+        etraxfs_dmac_connect_client(etraxfs_dmac, 7, eth[1] + 1);
+    }
+
+    /* 2 timers.  */
+    etraxfs_timer_init(env, pic->irq + 0x1b, pic->nmi + 1, 0x3001e000);
+    etraxfs_timer_init(env, pic->irq + 0x1b, pic->nmi + 1, 0x3005e000);
+
+    for (i = 0; i < 4; i++) {
+        if (serial_hds[i]) {
+            etraxfs_ser_init(env, pic->irq + 0x14 + i,
+                             serial_hds[i], 0x30026000 + i * 0x2000);
+        }
+    }
+
+    if (kernel_filename) {
+        uint64_t entry, high;
+        int kcmdline_len;
+
+        /* Boots a kernel elf binary, os/linux-2.6/vmlinux from the axis 
+           devboard SDK.  */
+        kernel_size = load_elf(kernel_filename, -0x80000000LL,
+                               &entry, NULL, &high);
+        bootstrap_pc = entry;
+        if (kernel_size < 0) {
+            /* Takes a kimage from the axis devboard SDK.  */
+            kernel_size = load_image(kernel_filename, phys_ram_base + 0x4000);
+            bootstrap_pc = 0x40004000;
+            env->regs[9] = 0x40004000 + kernel_size;
+        }
+        env->regs[8] = 0x56902387; /* RAM init magic.  */
+
+        if (kernel_cmdline && (kcmdline_len = strlen(kernel_cmdline))) {
+            if (kcmdline_len > 256) {
+                fprintf(stderr, "Too long CRIS kernel cmdline (max 256)\n");
+                exit(1);
+            }
+            pstrcpy_targphys(high, 256, kernel_cmdline);
+            /* Let the kernel know we are modifying the cmdline.  */
+            env->regs[10] = 0x87109563;
+            env->regs[11] = high;
+        }
+    }
+    env->pc = bootstrap_pc;
+
+    printf ("pc =%x\n", env->pc);
+    printf ("ram size =%ld\n", ram_size);
+}
+
+QEMUMachine axisdev88_machine = {
+    .name = "axis-dev88",
+    .desc = "AXIS devboard 88",
+    .init = axisdev88_init,
+    .ram_require = 0x8000000,
+};