@@ -27,6 +27,7 @@
#define AST2400_FMC_BASE 0X1E620000
#define AST2400_SPI_BASE 0X1E630000
#define AST2400_VIC_BASE 0x1E6C0000
+#define AST2400_SDMC_BASE 0x1E6E0000
#define AST2400_SCU_BASE 0x1E6E2000
#define AST2400_TIMER_BASE 0x1E782000
#define AST2400_I2C_BASE 0x1E78A000
@@ -97,6 +98,12 @@ static void ast2400_init(Object *obj)
object_initialize(&s->spi, sizeof(s->spi), "aspeed.smc.spi");
object_property_add_child(obj, "spi", OBJECT(&s->spi), NULL);
qdev_set_parent_bus(DEVICE(&s->spi), sysbus_get_default());
+
+ object_initialize(&s->sdmc, sizeof(s->sdmc), TYPE_ASPEED_SDMC);
+ object_property_add_child(obj, "sdmc", OBJECT(&s->sdmc), NULL);
+ qdev_set_parent_bus(DEVICE(&s->sdmc), sysbus_get_default());
+ qdev_prop_set_uint32(DEVICE(&s->sdmc), "silicon-rev",
+ AST2400_A0_SILICON_REV);
}
static void ast2400_realize(DeviceState *dev, Error **errp)
@@ -183,6 +190,14 @@ static void ast2400_realize(DeviceState *dev, Error **errp)
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->spi), 0, AST2400_SPI_BASE);
sysbus_mmio_map(SYS_BUS_DEVICE(&s->spi), 1, AST2400_SPI_FLASH_BASE);
+
+ /* SDMC - SDRAM Memory Controller */
+ object_property_set_bool(OBJECT(&s->sdmc), true, "realized", &err);
+ if (err) {
+ error_propagate(errp, err);
+ return;
+ }
+ sysbus_mmio_map(SYS_BUS_DEVICE(&s->sdmc), 0, AST2400_SDMC_BASE);
}
static void ast2400_class_init(ObjectClass *oc, void *data)
@@ -52,4 +52,4 @@ obj-$(CONFIG_PVPANIC) += pvpanic.o
obj-$(CONFIG_EDU) += edu.o
obj-$(CONFIG_HYPERV_TESTDEV) += hyperv_testdev.o
obj-$(CONFIG_AUX) += auxbus.o
-obj-$(CONFIG_ASPEED_SOC) += aspeed_scu.o
+obj-$(CONFIG_ASPEED_SOC) += aspeed_scu.o aspeed_sdmc.o
new file mode 100644
@@ -0,0 +1,263 @@
+/*
+ * ASPEED SDRAM Memory Controller
+ *
+ * Copyright (C) 2016 IBM Corp.
+ *
+ * This code is licensed under the GPL version 2 or later. See
+ * the COPYING file in the top-level directory.
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/log.h"
+#include "hw/misc/aspeed_sdmc.h"
+#include "hw/misc/aspeed_scu.h"
+#include "hw/qdev-properties.h"
+#include "qapi/error.h"
+#include "trace.h"
+
+/* Protection Key Register */
+#define R_PROT (0x00 / 4)
+#define PROT_KEY_UNLOCK 0xFC600309
+
+/* Configuration Register */
+#define R_CONF (0x04 / 4)
+
+/*
+ * Configuration register Ox4 (for Aspeed AST2400 SOC)
+ *
+ * These are for the record and future use. ASPEED_SDMC_DRAM_SIZE is
+ * what we care about right now as it is checked by U-Boot to
+ * determine the RAM size.
+ */
+
+#define ASPEED_SDMC_RESERVED 0xFFFFF800 /* 31:11 reserved */
+#define ASPEED_SDMC_AST2300_COMPAT (1 << 10)
+#define ASPEED_SDMC_SCRAMBLE_PATTERN (1 << 9)
+#define ASPEED_SDMC_DATA_SCRAMBLE (1 << 8)
+#define ASPEED_SDMC_ECC_ENABLE (1 << 7)
+#define ASPEED_SDMC_VGA_COMPAT (1 << 6) /* readonly */
+#define ASPEED_SDMC_DRAM_BANK (1 << 5)
+#define ASPEED_SDMC_DRAM_BURST (1 << 4)
+#define ASPEED_SDMC_VGA_APERTURE(x) ((x & 0x3) << 2) /* readonly */
+#define ASPEED_SDMC_VGA_8MB 0x0
+#define ASPEED_SDMC_VGA_16MB 0x1
+#define ASPEED_SDMC_VGA_32MB 0x2
+#define ASPEED_SDMC_VGA_64MB 0x3
+#define ASPEED_SDMC_DRAM_SIZE(x) (x & 0x3)
+#define ASPEED_SDMC_DRAM_64MB 0x0
+#define ASPEED_SDMC_DRAM_128MB 0x1
+#define ASPEED_SDMC_DRAM_256MB 0x2
+#define ASPEED_SDMC_DRAM_512MB 0x3
+
+#define ASPEED_SDMC_READONLY_MASK \
+ (ASPEED_SDMC_RESERVED | ASPEED_SDMC_VGA_COMPAT | \
+ ASPEED_SDMC_VGA_APERTURE(ASPEED_SDMC_VGA_64MB))
+/*
+ * Configuration register Ox4 (for Aspeed AST2500 SOC and higher)
+ *
+ * Incompatibilities are annotated in the list. ASPEED_SDMC_HW_VERSION
+ * should be set to 1 for the AST2500 SOC.
+ */
+#define ASPEED_SDMC_HW_VERSION(x) ((x & 0xf) << 28) /* readonly */
+#define ASPEED_SDMC_SW_VERSION ((x & 0xff) << 20)
+#define ASPEED_SDMC_CACHE_INITIAL_DONE (1 << 19) /* readonly */
+#define ASPEED_SDMC_AST2500_RESERVED 0x7C000 /* 18:14 reserved */
+#define ASPEED_SDMC_CACHE_DDR4_CONF (1 << 13)
+#define ASPEED_SDMC_CACHE_INITIAL (1 << 12)
+#define ASPEED_SDMC_CACHE_RANGE_CTRL (1 << 11)
+#define ASPEED_SDMC_CACHE_ENABLE (1 << 10) /* differs from AST2400 */
+#define ASPEED_SDMC_DRAM_TYPE (1 << 4) /* differs from AST2400 */
+
+/* DRAM size definitions differs */
+#define ASPEED_SDMC_AST2500_128MB 0x0
+#define ASPEED_SDMC_AST2500_256MB 0x1
+#define ASPEED_SDMC_AST2500_512MB 0x2
+#define ASPEED_SDMC_AST2500_1024MB 0x3
+
+#define ASPEED_SDMC_AST2500_READONLY_MASK \
+ (ASPEED_SDMC_HW_VERSION(0xf) | ASPEED_SDMC_CACHE_INITIAL_DONE | \
+ ASPEED_SDMC_AST2500_RESERVED | ASPEED_SDMC_VGA_COMPAT | \
+ ASPEED_SDMC_VGA_APERTURE(ASPEED_SDMC_VGA_64MB))
+
+static uint64_t aspeed_sdmc_read(void *opaque, hwaddr addr, unsigned size)
+{
+ AspeedSDMCState *s = ASPEED_SDMC(opaque);
+
+ addr >>= 2;
+
+ if (addr >= ARRAY_SIZE(s->regs)) {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: Out-of-bounds read at offset 0x%" HWADDR_PRIx "\n",
+ __func__, addr);
+ return 0;
+ }
+
+ return s->regs[addr];
+}
+
+static void aspeed_sdmc_write(void *opaque, hwaddr addr, uint64_t data,
+ unsigned int size)
+{
+ AspeedSDMCState *s = ASPEED_SDMC(opaque);
+
+ addr >>= 2;
+
+ if (addr >= ARRAY_SIZE(s->regs)) {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: Out-of-bounds write at offset 0x%" HWADDR_PRIx "\n",
+ __func__, addr);
+ return;
+ }
+
+ if (addr != R_PROT && s->regs[R_PROT] != PROT_KEY_UNLOCK) {
+ qemu_log_mask(LOG_GUEST_ERROR, "%s: SDMC is locked!\n", __func__);
+ return;
+ }
+
+ if (addr == R_CONF) {
+ /* Make sure readonly bits are kept */
+ switch (s->silicon_rev) {
+ case AST2400_A0_SILICON_REV:
+ data &= ~ASPEED_SDMC_READONLY_MASK;
+ break;
+ case AST2500_A0_SILICON_REV:
+ data &= ~ASPEED_SDMC_AST2500_READONLY_MASK;
+ break;
+ default:
+ g_assert_not_reached();
+ }
+ }
+
+ s->regs[addr] = data;
+}
+
+static const MemoryRegionOps aspeed_sdmc_ops = {
+ .read = aspeed_sdmc_read,
+ .write = aspeed_sdmc_write,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+ .valid.min_access_size = 4,
+ .valid.max_access_size = 4,
+};
+
+static int ast2400_rambits(void)
+{
+ switch (ram_size >> 20) {
+ case 64:
+ return ASPEED_SDMC_DRAM_64MB;
+ case 128:
+ return ASPEED_SDMC_DRAM_128MB;
+ case 256:
+ return ASPEED_SDMC_DRAM_256MB;
+ case 512:
+ return ASPEED_SDMC_DRAM_512MB;
+ default:
+ qemu_log_mask(LOG_GUEST_ERROR, "%s: Invalid RAM size: 0x"
+ RAM_ADDR_FMT "\n", __func__, ram_size);
+ break;
+ }
+
+ /* set a minimum default */
+ return ASPEED_SDMC_DRAM_64MB;
+}
+
+static int ast2500_rambits(void)
+{
+ switch (ram_size >> 20) {
+ case 128:
+ return ASPEED_SDMC_AST2500_128MB;
+ case 256:
+ return ASPEED_SDMC_AST2500_256MB;
+ case 512:
+ return ASPEED_SDMC_AST2500_512MB;
+ case 1024:
+ return ASPEED_SDMC_AST2500_1024MB;
+ default:
+ qemu_log_mask(LOG_GUEST_ERROR, "%s: Invalid RAM size: 0x"
+ RAM_ADDR_FMT "\n", __func__, ram_size);
+ break;
+ }
+
+ /* set a minimum default */
+ return ASPEED_SDMC_AST2500_128MB;
+}
+
+static void aspeed_sdmc_reset(DeviceState *dev)
+{
+ AspeedSDMCState *s = ASPEED_SDMC(dev);
+
+ memset(s->regs, 0, sizeof(s->regs));
+
+ /* Set ram size bit and defaults values */
+ switch (s->silicon_rev) {
+ case AST2400_A0_SILICON_REV:
+ s->regs[R_CONF] |=
+ ASPEED_SDMC_VGA_COMPAT |
+ ASPEED_SDMC_DRAM_SIZE(ast2400_rambits());
+ break;
+
+ case AST2500_A0_SILICON_REV:
+ s->regs[R_CONF] |=
+ ASPEED_SDMC_HW_VERSION(1) |
+ ASPEED_SDMC_VGA_APERTURE(ASPEED_SDMC_VGA_64MB) |
+ ASPEED_SDMC_DRAM_SIZE(ast2500_rambits());
+ break;
+
+ default:
+ g_assert_not_reached();
+ }
+}
+
+static void aspeed_sdmc_realize(DeviceState *dev, Error **errp)
+{
+ SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
+ AspeedSDMCState *s = ASPEED_SDMC(dev);
+
+ if (!is_supported_silicon_rev(s->silicon_rev)) {
+ error_setg(errp, "Unknown silicon revision: 0x%" PRIx32,
+ s->silicon_rev);
+ return;
+ }
+
+ memory_region_init_io(&s->iomem, OBJECT(s), &aspeed_sdmc_ops, s,
+ TYPE_ASPEED_SDMC, 0x1000);
+ sysbus_init_mmio(sbd, &s->iomem);
+}
+
+static const VMStateDescription vmstate_aspeed_sdmc = {
+ .name = "aspeed.sdmc",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32_ARRAY(regs, AspeedSDMCState, ASPEED_SDMC_NR_REGS),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static Property aspeed_sdmc_properties[] = {
+ DEFINE_PROP_UINT32("silicon-rev", AspeedSDMCState, silicon_rev, 0),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void aspeed_sdmc_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ dc->realize = aspeed_sdmc_realize;
+ dc->reset = aspeed_sdmc_reset;
+ dc->desc = "ASPEED SDRAM Memory Controller";
+ dc->vmsd = &vmstate_aspeed_sdmc;
+ dc->props = aspeed_sdmc_properties;
+}
+
+static const TypeInfo aspeed_sdmc_info = {
+ .name = TYPE_ASPEED_SDMC,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(AspeedSDMCState),
+ .class_init = aspeed_sdmc_class_init,
+};
+
+static void aspeed_sdmc_register_types(void)
+{
+ type_register_static(&aspeed_sdmc_info);
+}
+
+type_init(aspeed_sdmc_register_types);
@@ -15,6 +15,7 @@
#include "hw/arm/arm.h"
#include "hw/intc/aspeed_vic.h"
#include "hw/misc/aspeed_scu.h"
+#include "hw/misc/aspeed_sdmc.h"
#include "hw/timer/aspeed_timer.h"
#include "hw/i2c/aspeed_i2c.h"
#include "hw/ssi/aspeed_smc.h"
@@ -32,6 +33,7 @@ typedef struct AST2400State {
AspeedSCUState scu;
AspeedSMCState smc;
AspeedSMCState spi;
+ AspeedSDMCState sdmc;
} AST2400State;
#define TYPE_AST2400 "ast2400"
new file mode 100644
@@ -0,0 +1,31 @@
+/*
+ * ASPEED SDRAM Memory Controller
+ *
+ * Copyright (C) 2016 IBM Corp.
+ *
+ * This code is licensed under the GPL version 2 or later. See the
+ * COPYING file in the top-level directory.
+ */
+#ifndef ASPEED_SDMC_H
+#define ASPEED_SDMC_H
+
+#include "hw/sysbus.h"
+
+#define TYPE_ASPEED_SDMC "aspeed.sdmc"
+#define ASPEED_SDMC(obj) OBJECT_CHECK(AspeedSDMCState, (obj), TYPE_ASPEED_SDMC)
+
+#define ASPEED_SDMC_NR_REGS (0x8 >> 2)
+
+typedef struct AspeedSDMCState {
+ /*< private >*/
+ SysBusDevice parent_obj;
+
+ /*< public >*/
+ MemoryRegion iomem;
+
+ uint32_t regs[ASPEED_SDMC_NR_REGS];
+ uint32_t silicon_rev;
+
+} AspeedSDMCState;
+
+#endif /* ASPEED_SDMC_H */