[Qemu-devel] [PATCH 2/2] Provide basic emulation for Sharp SL-6000 PDA (Tosa)

[Dmitry Baryshkov]

This adds basic support for emulating Sharp Zaurus SL-6000 PDA (tosa).
Currently it provides only basic support: no kbd/lcd, sound, ts, etc.
But it's able at least to boot Linux from CF.

Signed-off-by: Dmitry Baryshkov <address@hidden>
---
 Makefile.target      |    1 +
 hw/boards.h          |    3 +
 hw/tosa.c            |  159 ++++++++++++++++++++++++++++++++++++++++++++++++++
 target-arm/machine.c |    1 +
 4 files changed, 164 insertions(+), 0 deletions(-)
 create mode 100644 hw/tosa.c

diff --git a/Makefile.target b/Makefile.target
index 553b7f0..645afaa 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -628,6 +628,7 @@ OBJS+= nseries.o blizzard.o onenand.o vga.o cbus.o 
tusb6010.o usb-musb.o
 OBJS+= tsc2005.o
 OBJS+= mst_fpga.o mainstone.o
 OBJS+= musicpal.o pflash_cfi02.o
+OBJS+= tosa.o
 CPPFLAGS += -DHAS_AUDIO
 endif
 ifeq ($(TARGET_BASE_ARCH), sh4)
diff --git a/hw/boards.h b/hw/boards.h
index 2d67a70..eacd324 100644
--- a/hw/boards.h
+++ b/hw/boards.h
@@ -111,4 +111,7 @@ extern QEMUMachine mainstone2_machine;
 /* musicpal.c */
 extern QEMUMachine musicpal_machine;
 
+/* tosa.c */
+extern QEMUMachine tosapda_machine;
+
 #endif
diff --git a/hw/tosa.c b/hw/tosa.c
new file mode 100644
index 0000000..0531263
--- /dev/null
+++ b/hw/tosa.c
@@ -0,0 +1,159 @@
+/* vim:set shiftwidth=4 ts=4 et: */
+/*
+ * PXA255 Sharp Zaurus SL-6000 PDA platform
+ *
+ * Copyright (c) 2008 Dmitry Baryshkov
+ *
+ * Code based on spitz platform by Andrzej Zaborowski <address@hidden>
+ * This code is licensed under the GNU GPL v2.
+ */
+
+#include "hw.h"
+#include "pxa.h"
+#include "arm-misc.h"
+#include "sysemu.h"
+#include "sharpsl.h"
+#include "pcmcia.h"
+#include "block.h"
+#include "boards.h"
+
+#define TOSA_RAM    0x04000000
+#define TOSA_ROM       0x00800000
+
+#define TOSA_GPIO_nSD_DETECT           (9)
+#define TOSA_GPIO_ON_RESET             (19)
+#define TOSA_GPIO_CF_IRQ               (21)    /* CF slot0 Ready */
+#define TOSA_GPIO_CF_CD                        (13)
+#define TOSA_GPIO_JC_CF_IRQ            (36)    /* CF slot1 Ready */
+
+#define TOSA_SCOOP_GPIO_BASE           0
+#define TOSA_GPIO_IR_POWERDWN          (TOSA_SCOOP_GPIO_BASE + 2)
+#define TOSA_GPIO_SD_WP                        (TOSA_SCOOP_GPIO_BASE + 3)
+#define TOSA_GPIO_PWR_ON               (TOSA_SCOOP_GPIO_BASE + 4)
+
+struct tc6393xb_s {
+    target_phys_addr_t target_base;
+};
+
+static uint32_t tc6393xb_readb(void *opaque, target_phys_addr_t addr)
+{
+    return 3;
+}
+static void tc6393xb_writeb(void *opaque, target_phys_addr_t addr, uint32_t 
value)
+{
+}
+static void tosa_tc6393xb_register(struct pxa2xx_state_s *cpu)
+{
+    int iomemtype;
+    struct tc6393xb_s *s;
+    CPUReadMemoryFunc *tc6393xb_readfn[] = {
+        tc6393xb_readb,
+        tc6393xb_readb,
+        tc6393xb_readb,
+    };
+    CPUWriteMemoryFunc *tc6393xb_writefn[] = {
+        tc6393xb_writeb,
+        tc6393xb_writeb,
+        tc6393xb_writeb,
+    };
+
+    s = (struct tc6393xb_s *) qemu_mallocz(sizeof(struct tc6393xb_s));
+    s->target_base = 0x10000000;
+
+    iomemtype = cpu_register_io_memory(0, tc6393xb_readfn,
+                    tc6393xb_writefn, s);
+    cpu_register_physical_memory(s->target_base, 0x200000, iomemtype);
+}
+
+static void tosa_microdrive_attach(struct pxa2xx_state_s *cpu)
+{
+    struct pcmcia_card_s *md;
+    int index;
+    BlockDriverState *bs;
+
+    index = drive_get_index(IF_IDE, 0, 0);
+    if (index == -1)
+        return;
+    bs = drives_table[index].bdrv;
+    if (bdrv_is_inserted(bs) && !bdrv_is_removable(bs)) {
+        md = dscm1xxxx_init(bs);
+        pxa2xx_pcmcia_attach(cpu->pcmcia[0], md);
+    }
+}
+
+static void tosa_gpio_setup(struct pxa2xx_state_s *cpu,
+                struct scoop_info_s *scp0,
+                struct scoop_info_s *scp1)
+{
+    /* MMC/SD host */
+    pxa2xx_mmci_handlers(cpu->mmc,
+                    scoop_gpio_in_get(scp0)[TOSA_GPIO_SD_WP],
+                    
qemu_irq_invert(pxa2xx_gpio_in_get(cpu->gpio)[TOSA_GPIO_nSD_DETECT]));
+
+    /* Handle reset */
+    pxa2xx_gpio_out_set(cpu->gpio, TOSA_GPIO_ON_RESET, cpu->reset);
+
+    /* PCMCIA signals: card's IRQ and Card-Detect */
+    pxa2xx_pcmcia_set_irq_cb(cpu->pcmcia[0],
+                        pxa2xx_gpio_in_get(cpu->gpio)[TOSA_GPIO_CF_IRQ],
+                        pxa2xx_gpio_in_get(cpu->gpio)[TOSA_GPIO_CF_CD]);
+
+    pxa2xx_pcmcia_set_irq_cb(cpu->pcmcia[1],
+                        pxa2xx_gpio_in_get(cpu->gpio)[TOSA_GPIO_JC_CF_IRQ],
+                        NULL);
+
+}
+
+static struct arm_boot_info tosa_binfo = {
+    .loader_start = PXA2XX_SDRAM_BASE,
+    .ram_size = 0x04000000,
+};
+
+static void tosa_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)
+{
+    struct pxa2xx_state_s *cpu;
+    struct scoop_info_s *scp0, *scp1;
+
+    if (ram_size < (TOSA_RAM + TOSA_ROM + PXA2XX_INTERNAL_SIZE)) {
+        fprintf(stderr, "This platform requires %i bytes of memory\n",
+                TOSA_RAM + TOSA_ROM + PXA2XX_INTERNAL_SIZE);
+        exit(1);
+    }
+
+    if (!cpu_model)
+        cpu_model = "pxa255";
+
+    cpu = pxa255_init(tosa_binfo.ram_size, ds);
+
+    cpu_register_physical_memory(0, TOSA_ROM,
+                    qemu_ram_alloc(TOSA_ROM) | IO_MEM_ROM);
+
+    tosa_tc6393xb_register(cpu);
+
+    scp0 = scoop_init(cpu, 0, 0x08800000);
+    scp1 = scoop_init(cpu, 1, 0x14800040);
+
+    tosa_gpio_setup(cpu, scp0, scp1);
+
+    tosa_microdrive_attach(cpu);
+
+    /* Setup initial (reset) machine state */
+    cpu->env->regs[15] = tosa_binfo.loader_start;
+
+    tosa_binfo.kernel_filename = kernel_filename;
+    tosa_binfo.kernel_cmdline = kernel_cmdline;
+    tosa_binfo.initrd_filename = initrd_filename;
+    tosa_binfo.board_id = 0x208;
+    arm_load_kernel(cpu->env, &tosa_binfo);
+    sl_bootparam_write(SL_PXA_PARAM_BASE - PXA2XX_SDRAM_BASE);
+}
+
+QEMUMachine tosapda_machine = {
+    "tosa",
+    "Tosa PDA (PXA255)",
+    tosa_init,
+    TOSA_RAM + TOSA_ROM + PXA2XX_INTERNAL_SIZE + RAMSIZE_FIXED,
+};
diff --git a/target-arm/machine.c b/target-arm/machine.c
index 5a5ed70..6637e72 100644
--- a/target-arm/machine.c
+++ b/target-arm/machine.c
@@ -20,6 +20,7 @@ void register_machines(void)
     qemu_register_machine(&verdex_machine);
     qemu_register_machine(&mainstone2_machine);
     qemu_register_machine(&musicpal_machine);
+    qemu_register_machine(&tosapda_machine);
 }
 
 void cpu_save(QEMUFile *f, void *opaque)
-- 
1.5.5.1


-- 
With best wishes
Dmitry