[Qemu-devel] [PATCH v8 10/11] i.MX25: Add support for the i.MX25 PDK 3DS

[Jean-Christophe Dubois]

This just adds the required memory arround the i.MX25 SOC.

Signed-off-by: Jean-Christophe Dubois <address@hidden>
---

Changes since v1:
    * Added a ds1338 I2C device for qtest purpose.

Changes since v2:
    * none
 
Changes since v3:
    * Rework GPL header          
    * use I2C constructor helper.

Changes since v4:
    * use sysbus_create_simple() instead of I2C constructor helper

Changes since v5:
    * Add ds1338 only for qtest mode.
    * small comment fixes.

Changes since v6:
    * Allow for more than 4 serial if suppoted by Qemu.

Changes since v7:
    * Move the SOC part into its own file.

 hw/arm/Makefile.objs |   2 +-
 hw/arm/imx25_3ds.c   | 217 +++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 218 insertions(+), 1 deletion(-)
 create mode 100644 hw/arm/imx25_3ds.c

diff --git a/hw/arm/Makefile.objs b/hw/arm/Makefile.objs
index b89c31d..c03228d 100644
--- a/hw/arm/Makefile.objs
+++ b/hw/arm/Makefile.objs
@@ -13,4 +13,4 @@ obj-y += omap1.o omap2.o strongarm.o
 obj-$(CONFIG_ALLWINNER_A10) += allwinner-a10.o cubieboard.o
 obj-$(CONFIG_STM32F205_SOC) += stm32f205_soc.o
 obj-$(CONFIG_XLNX_ZYNQMP) += xlnx-zynqmp.o xlnx-ep108.o
-obj-$(CONFIG_FSL_IMX25) += fsl-imx25.o
+obj-$(CONFIG_FSL_IMX25) += fsl-imx25.o imx25_3ds.o
diff --git a/hw/arm/imx25_3ds.c b/hw/arm/imx25_3ds.c
new file mode 100644
index 0000000..ce97946
--- /dev/null
+++ b/hw/arm/imx25_3ds.c
@@ -0,0 +1,217 @@
+/*
+ * Copyright (c) 2013 Jean-Christophe Dubois <address@hidden>
+ *
+ * 3Dstack Board System emulation.
+ *
+ * Based on hw/arm/kzm.c
+ *
+ * Copyright (c) 2008 OKL and 2011 NICTA
+ * Written by Hans at OK-Labs
+ * Updated by Peter Chubb.
+ *
+ *  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 "hw/arm/fsl-imx25.h"
+#include "hw/boards.h"
+#include "qemu/error-report.h"
+#include "exec/address-spaces.h"
+#include "sysemu/qtest.h"
+#include "hw/i2c/i2c.h"
+
+/* Memory map for 3D-Stack Emulation Baseboard:
+ * 0x00000000-0x00003fff 16k ROM              IGNORED
+ * 0x00004000-0x00403fff Reserved             IGNORED
+ * 0x00404000-0x00408fff 20k ROM              IGNORED
+ * 0x00409000-0x0fffffff Reserved             IGNORED
+ * 0x10000000-0x1fffffff Reserved             IGNORED
+ * 0x20000000-0x2fffffff Reserved             IGNORED
+ * 0x30000000-0x3fffffff Reserved             IGNORED
+ * 0x40000000-0x43efffff Reserved             IGNORED
+ * 0x43f00000-0x6fffffff I.MX25 Internal Register Space
+ *   0x43f00000 IO_AREA0
+ *   0x43f80000 I2C0                          EMULATED
+ *   0x43f84000 I2C2                          EMULATED
+ *   0x43f98000 I2C1                          EMULATED
+ *   0x43f90000 UART1                         EMULATED
+ *   0x43f94000 UART2                         EMULATED
+ *   0x43fb0000 UART4                         IGNORED
+ *   0x43fb4000 UART5                         IGNORED
+ *   0x5000c000 UART3                         EMULATED
+ *   0x50038000 FEC                           EMULATED
+ *   0x53f80000 CCM                           EMULATED
+ *   0x53f84000 GPT 4                         EMULATED
+ *   0x53f88000 GPT 3                         EMULATED
+ *   0x53f8c000 GPT 2                         EMULATED
+ *   0x53f90000 GPT 1                         EMULATED
+ *   0x53f94000 PIT 1                         EMULATED
+ *   0x53f98000 PIT 2                         EMULATED
+ *   0x53f9c000 GPIO-4                        EMULATED
+ *   0x53fa4000 GPIO-3                        EMULATED
+ *   0x53fcc000 GPIO-1                        EMULATED
+ *   0x53fd0000 GPIO-2                        EMULATED
+ *   0x68000000 ASIC                          EMULATED
+ * 0x78000000-0x7801ffff SRAM                 EMULATED
+ * 0x78020000-0x7fffffff SRAM Aliasing        EMULATED
+ * 0x80000000-0x87ffffff RAM + Alias          EMULATED
+ * 0x90000000-0x9fffffff RAM + Alias          EMULATED
+ * 0xa0000000-0xa7ffffff Flash                IGNORED
+ * 0xa8000000-0xafffffff Flash                IGNORED
+ * 0xb0000000-0xb1ffffff SRAM                 IGNORED
+ * 0xb2000000-0xb3ffffff SRAM                 IGNORED
+ * 0xb4000000-0xb5ffffff CS4                  IGNORED
+ * 0xb6000000-0xb8000fff Reserved             IGNORED
+ * 0xb8001000-0xb8001fff SDRAM CTRL reg       IGNORED
+ * 0xb8002000-0xb8002fff WEIM CTRL reg        IGNORED
+ * 0xb8003000-0xb8003fff M3IF CTRL reg        IGNORED
+ * 0xb8004000-0xb8004fff EMI CTRL reg         IGNORED
+ * 0xb8005000-0xbaffffff Reserved             IGNORED
+ * 0xbb000000-0xbb000fff NAND flash area buf  IGNORED
+ * 0xbb001000-0xbb0011ff NAND flash reserved  IGNORED
+ * 0xbb001200-0xbb001dff Reserved             IGNORED
+ * 0xbb001e00-0xbb001fff NAN flash CTRL reg   IGNORED
+ * 0xbb012000-0xbfffffff Reserved             IGNORED
+ * 0xc0000000-0xffffffff Reserved             IGNORED
+ */
+
+typedef struct imx25_3ds {
+    FslImx25State soc;
+    MemoryRegion ram[2];
+    MemoryRegion ram_alias;
+    MemoryRegion sram;
+    MemoryRegion sram_alias;
+} imx25_3ds;
+
+#define IMX25_SRAM_ADDRESS  (0x78000000)
+#define IMX25_SRAMSIZE      (128*1024)
+#define IMX25_CS_SRAMSIZE   (128*1024*1024)
+#define IMX25_3DS_ADDRESS   (0x80000000)
+#define IMX25_CS_RAMSIZE    (256*1024*1024)
+
+static struct arm_boot_info imx25_3ds_binfo;
+
+static void imx25_3ds_init(MachineState *machine)
+{
+    imx25_3ds *s = g_new0(imx25_3ds, 1);
+    Error *err = NULL;
+    int i;
+
+    object_initialize(&s->soc, sizeof(s->soc), TYPE_FSL_IMX25);
+    object_property_add_child(OBJECT(machine), "soc", OBJECT(&s->soc),
+                              &error_abort);
+
+    object_property_set_bool(OBJECT(&s->soc), true, "realized", &err);
+    if (err != NULL) {
+        error_report("%s", error_get_pretty(err));
+        exit(1);
+    }
+
+    /* We need to initialize our memory */
+
+    if (machine->ram_size > (2 * IMX25_CS_RAMSIZE)) {
+       error_report("WARNING: RAM size " RAM_ADDR_FMT " above max supported, "
+                     "reduced to %x", machine->ram_size,
+                     2 * IMX25_CS_RAMSIZE);
+       machine->ram_size = 2 * IMX25_CS_RAMSIZE;
+    }
+
+    /* create our main memory */
+    for (i = 0; i <= (machine->ram_size / IMX25_CS_RAMSIZE); i++) {
+        ram_addr_t blk_size = machine->ram_size - (IMX25_CS_RAMSIZE * i);
+        char ram_name[20];
+
+        if (blk_size > IMX25_CS_RAMSIZE) {
+            blk_size = IMX25_CS_RAMSIZE;
+        }
+
+        if (blk_size == 0) {
+            break;
+        }
+
+        sprintf(ram_name, "imx25.ram%d", i);
+
+        memory_region_init_ram(&s->ram[i], NULL, ram_name, blk_size, 
&error_abort);
+        vmstate_register_ram_global(&s->ram[i]);
+        memory_region_add_subregion(get_system_memory(), IMX25_3DS_ADDRESS
+                                    + (IMX25_CS_RAMSIZE * i), &s->ram[i]);
+
+        /* Add ram alias */
+        if (blk_size < IMX25_CS_RAMSIZE) {
+            char alias_name[20];
+
+            sprintf(alias_name, "ram.alias%d", i);
+
+            memory_region_init_alias(&s->ram_alias, NULL, alias_name,
+                                     &s->ram[i], 0,
+                                     IMX25_CS_RAMSIZE - blk_size);
+            memory_region_add_subregion(get_system_memory(), IMX25_3DS_ADDRESS
+                                        + (IMX25_CS_RAMSIZE * i) + blk_size,
+                                        &s->ram_alias);
+            break;
+        }
+    }
+
+    /* create the sram area */
+    memory_region_init_ram(&s->sram, NULL, "imx25.sram", IMX25_SRAMSIZE,
+                           &error_abort);
+    vmstate_register_ram_global(&s->sram);
+    memory_region_add_subregion(get_system_memory(), IMX25_SRAM_ADDRESS,
+                                &s->sram);
+
+    /* add sram alias */
+    memory_region_init_alias(&s->sram_alias, NULL, "sram.alias", &s->sram, 0,
+                             IMX25_CS_SRAMSIZE - IMX25_SRAMSIZE);
+    memory_region_add_subregion(get_system_memory(),
+                                IMX25_SRAM_ADDRESS + IMX25_SRAMSIZE,
+                                &s->sram_alias);
+
+    imx25_3ds_binfo.ram_size = machine->ram_size;
+    imx25_3ds_binfo.kernel_filename = machine->kernel_filename;
+    imx25_3ds_binfo.kernel_cmdline = machine->kernel_cmdline;
+    imx25_3ds_binfo.initrd_filename = machine->initrd_filename;
+    imx25_3ds_binfo.loader_start = IMX25_3DS_ADDRESS;
+    imx25_3ds_binfo.board_id = 1771,
+    imx25_3ds_binfo.nb_cpus = 1;
+
+    /*
+     * We test explicitly for qtest here as it is not done (yet?) in
+     * arm_load_kernel(). Without this the "make check" command would
+     * fail.
+     */
+    if (!qtest_enabled()) {
+        arm_load_kernel(&s->soc.cpu, &imx25_3ds_binfo);
+    } else {
+        /*
+         * This I2C device doesn't exist on the real board.
+         * We add it here (only on qtest usage) to be able to do a bit
+         * of simple qtest. See "make check" for details.
+         */
+        i2c_create_slave((I2CBus *)qdev_get_child_bus(DEVICE(&s->soc.i2c[0]),
+                                                      "i2c"),
+                         "ds1338", 0x68);
+    }
+}
+
+static QEMUMachine imx25_3ds_machine = {
+    .name = "imx25_3ds",
+    .desc = "ARM i.MX25 PDK board (ARM926)",
+    .init = imx25_3ds_init,
+};
+
+static void imx25_3ds_machine_init(void)
+{
+    qemu_register_machine(&imx25_3ds_machine);
+}
+
+machine_init(imx25_3ds_machine_init)
-- 
2.1.4