X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=qemu%2Fhw%2Fmisc%2Fomap_sdrc.c;fp=qemu%2Fhw%2Fmisc%2Fomap_sdrc.c;h=3de0c0e9d011bf1795298e8e47e37afef3a56509;hb=e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb;hp=0000000000000000000000000000000000000000;hpb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;p=kvmfornfv.git

diff --git a/qemu/hw/misc/omap_sdrc.c b/qemu/hw/misc/omap_sdrc.c
new file mode 100644
index 000000000..3de0c0e9d
--- /dev/null
+++ b/qemu/hw/misc/omap_sdrc.c
@@ -0,0 +1,169 @@
+/*
+ * TI OMAP SDRAM controller emulation.
+ *
+ * Copyright (C) 2007-2008 Nokia Corporation
+ * Written by Andrzej Zaborowski <andrew@openedhand.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 or
+ * (at your option) any later version of the License.
+ *
+ * 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/hw.h"
+#include "hw/arm/omap.h"
+
+/* SDRAM Controller Subsystem */
+struct omap_sdrc_s {
+    MemoryRegion iomem;
+    uint8_t config;
+};
+
+void omap_sdrc_reset(struct omap_sdrc_s *s)
+{
+    s->config = 0x10;
+}
+
+static uint64_t omap_sdrc_read(void *opaque, hwaddr addr,
+                               unsigned size)
+{
+    struct omap_sdrc_s *s = (struct omap_sdrc_s *) opaque;
+
+    if (size != 4) {
+        return omap_badwidth_read32(opaque, addr);
+    }
+
+    switch (addr) {
+    case 0x00:	/* SDRC_REVISION */
+        return 0x20;
+
+    case 0x10:	/* SDRC_SYSCONFIG */
+        return s->config;
+
+    case 0x14:	/* SDRC_SYSSTATUS */
+        return 1;						/* RESETDONE */
+
+    case 0x40:	/* SDRC_CS_CFG */
+    case 0x44:	/* SDRC_SHARING */
+    case 0x48:	/* SDRC_ERR_ADDR */
+    case 0x4c:	/* SDRC_ERR_TYPE */
+    case 0x60:	/* SDRC_DLLA_SCTRL */
+    case 0x64:	/* SDRC_DLLA_STATUS */
+    case 0x68:	/* SDRC_DLLB_CTRL */
+    case 0x6c:	/* SDRC_DLLB_STATUS */
+    case 0x70:	/* SDRC_POWER */
+    case 0x80:	/* SDRC_MCFG_0 */
+    case 0x84:	/* SDRC_MR_0 */
+    case 0x88:	/* SDRC_EMR1_0 */
+    case 0x8c:	/* SDRC_EMR2_0 */
+    case 0x90:	/* SDRC_EMR3_0 */
+    case 0x94:	/* SDRC_DCDL1_CTRL */
+    case 0x98:	/* SDRC_DCDL2_CTRL */
+    case 0x9c:	/* SDRC_ACTIM_CTRLA_0 */
+    case 0xa0:	/* SDRC_ACTIM_CTRLB_0 */
+    case 0xa4:	/* SDRC_RFR_CTRL_0 */
+    case 0xa8:	/* SDRC_MANUAL_0 */
+    case 0xb0:	/* SDRC_MCFG_1 */
+    case 0xb4:	/* SDRC_MR_1 */
+    case 0xb8:	/* SDRC_EMR1_1 */
+    case 0xbc:	/* SDRC_EMR2_1 */
+    case 0xc0:	/* SDRC_EMR3_1 */
+    case 0xc4:	/* SDRC_ACTIM_CTRLA_1 */
+    case 0xc8:	/* SDRC_ACTIM_CTRLB_1 */
+    case 0xd4:	/* SDRC_RFR_CTRL_1 */
+    case 0xd8:	/* SDRC_MANUAL_1 */
+        return 0x00;
+    }
+
+    OMAP_BAD_REG(addr);
+    return 0;
+}
+
+static void omap_sdrc_write(void *opaque, hwaddr addr,
+                            uint64_t value, unsigned size)
+{
+    struct omap_sdrc_s *s = (struct omap_sdrc_s *) opaque;
+
+    if (size != 4) {
+        omap_badwidth_write32(opaque, addr, value);
+        return;
+    }
+
+    switch (addr) {
+    case 0x00:	/* SDRC_REVISION */
+    case 0x14:	/* SDRC_SYSSTATUS */
+    case 0x48:	/* SDRC_ERR_ADDR */
+    case 0x64:	/* SDRC_DLLA_STATUS */
+    case 0x6c:	/* SDRC_DLLB_STATUS */
+        OMAP_RO_REG(addr);
+        return;
+
+    case 0x10:	/* SDRC_SYSCONFIG */
+        if ((value >> 3) != 0x2)
+            fprintf(stderr, "%s: bad SDRAM idle mode %i\n",
+                    __FUNCTION__, (unsigned)value >> 3);
+        if (value & 2)
+            omap_sdrc_reset(s);
+        s->config = value & 0x18;
+        break;
+
+    case 0x40:	/* SDRC_CS_CFG */
+    case 0x44:	/* SDRC_SHARING */
+    case 0x4c:	/* SDRC_ERR_TYPE */
+    case 0x60:	/* SDRC_DLLA_SCTRL */
+    case 0x68:	/* SDRC_DLLB_CTRL */
+    case 0x70:	/* SDRC_POWER */
+    case 0x80:	/* SDRC_MCFG_0 */
+    case 0x84:	/* SDRC_MR_0 */
+    case 0x88:	/* SDRC_EMR1_0 */
+    case 0x8c:	/* SDRC_EMR2_0 */
+    case 0x90:	/* SDRC_EMR3_0 */
+    case 0x94:	/* SDRC_DCDL1_CTRL */
+    case 0x98:	/* SDRC_DCDL2_CTRL */
+    case 0x9c:	/* SDRC_ACTIM_CTRLA_0 */
+    case 0xa0:	/* SDRC_ACTIM_CTRLB_0 */
+    case 0xa4:	/* SDRC_RFR_CTRL_0 */
+    case 0xa8:	/* SDRC_MANUAL_0 */
+    case 0xb0:	/* SDRC_MCFG_1 */
+    case 0xb4:	/* SDRC_MR_1 */
+    case 0xb8:	/* SDRC_EMR1_1 */
+    case 0xbc:	/* SDRC_EMR2_1 */
+    case 0xc0:	/* SDRC_EMR3_1 */
+    case 0xc4:	/* SDRC_ACTIM_CTRLA_1 */
+    case 0xc8:	/* SDRC_ACTIM_CTRLB_1 */
+    case 0xd4:	/* SDRC_RFR_CTRL_1 */
+    case 0xd8:	/* SDRC_MANUAL_1 */
+        break;
+
+    default:
+        OMAP_BAD_REG(addr);
+        return;
+    }
+}
+
+static const MemoryRegionOps omap_sdrc_ops = {
+    .read = omap_sdrc_read,
+    .write = omap_sdrc_write,
+    .endianness = DEVICE_NATIVE_ENDIAN,
+};
+
+struct omap_sdrc_s *omap_sdrc_init(MemoryRegion *sysmem,
+                                   hwaddr base)
+{
+    struct omap_sdrc_s *s = (struct omap_sdrc_s *)
+            g_malloc0(sizeof(struct omap_sdrc_s));
+
+    omap_sdrc_reset(s);
+
+    memory_region_init_io(&s->iomem, NULL, &omap_sdrc_ops, s, "omap.sdrc", 0x1000);
+    memory_region_add_subregion(sysmem, base, &s->iomem);
+
+    return s;
+}