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[Qemu-devel] [6061] target-ppc: move PPC4xx SDRAM controller emulation f
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From: |
Aurelien Jarno |
|
Subject: |
[Qemu-devel] [6061] target-ppc: move PPC4xx SDRAM controller emulation from ppc405_uc. c to ppc4xx_devs.c |
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Date: |
Mon, 15 Dec 2008 22:59:34 +0000 |
Revision: 6061
http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=6061
Author: aurel32
Date: 2008-12-15 22:59:34 +0000 (Mon, 15 Dec 2008)
Log Message:
-----------
target-ppc: move PPC4xx SDRAM controller emulation from ppc405_uc.c to
ppc4xx_devs.c
The SDRAM controller is shared across almost all 405 and 440 embedded
processors, with some slight differences such as the sizes supported for each
memory bank.
Code movement only; no functional changes.
Signed-off-by: Hollis Blanchard <address@hidden>
Signed-off-by: Aurelien Jarno <address@hidden>
Modified Paths:
--------------
trunk/hw/ppc405.h
trunk/hw/ppc405_uc.c
trunk/hw/ppc4xx.h
trunk/hw/ppc4xx_devs.c
Modified: trunk/hw/ppc405.h
===================================================================
--- trunk/hw/ppc405.h 2008-12-15 22:20:42 UTC (rev 6060)
+++ trunk/hw/ppc405.h 2008-12-15 22:59:34 UTC (rev 6061)
@@ -66,11 +66,6 @@
/* OPB arbitrer */
void ppc4xx_opba_init (CPUState *env, ppc4xx_mmio_t *mmio,
target_phys_addr_t offset);
-/* SDRAM controller */
-void ppc405_sdram_init (CPUState *env, qemu_irq irq, int nbanks,
- target_phys_addr_t *ram_bases,
- target_phys_addr_t *ram_sizes,
- int do_init);
/* Peripheral controller */
void ppc405_ebc_init (CPUState *env);
/* DMA controller */
Modified: trunk/hw/ppc405_uc.c
===================================================================
--- trunk/hw/ppc405_uc.c 2008-12-15 22:20:42 UTC (rev 6060)
+++ trunk/hw/ppc405_uc.c 2008-12-15 22:59:34 UTC (rev 6061)
@@ -401,347 +401,6 @@
/* XXX: TODO */
/*****************************************************************************/
-/* SDRAM controller */
-typedef struct ppc4xx_sdram_t ppc4xx_sdram_t;
-struct ppc4xx_sdram_t {
- uint32_t addr;
- int nbanks;
- target_phys_addr_t ram_bases[4];
- target_phys_addr_t ram_sizes[4];
- uint32_t besr0;
- uint32_t besr1;
- uint32_t bear;
- uint32_t cfg;
- uint32_t status;
- uint32_t rtr;
- uint32_t pmit;
- uint32_t bcr[4];
- uint32_t tr;
- uint32_t ecccfg;
- uint32_t eccesr;
- qemu_irq irq;
-};
-
-enum {
- SDRAM0_CFGADDR = 0x010,
- SDRAM0_CFGDATA = 0x011,
-};
-
-/* XXX: TOFIX: some patches have made this code become inconsistent:
- * there are type inconsistencies, mixing target_phys_addr_t, target_ulong
- * and uint32_t
- */
-static uint32_t sdram_bcr (target_phys_addr_t ram_base,
- target_phys_addr_t ram_size)
-{
- uint32_t bcr;
-
- switch (ram_size) {
- case (4 * 1024 * 1024):
- bcr = 0x00000000;
- break;
- case (8 * 1024 * 1024):
- bcr = 0x00020000;
- break;
- case (16 * 1024 * 1024):
- bcr = 0x00040000;
- break;
- case (32 * 1024 * 1024):
- bcr = 0x00060000;
- break;
- case (64 * 1024 * 1024):
- bcr = 0x00080000;
- break;
- case (128 * 1024 * 1024):
- bcr = 0x000A0000;
- break;
- case (256 * 1024 * 1024):
- bcr = 0x000C0000;
- break;
- default:
- printf("%s: invalid RAM size " PADDRX "\n", __func__, ram_size);
- return 0x00000000;
- }
- bcr |= ram_base & 0xFF800000;
- bcr |= 1;
-
- return bcr;
-}
-
-static always_inline target_phys_addr_t sdram_base (uint32_t bcr)
-{
- return bcr & 0xFF800000;
-}
-
-static target_ulong sdram_size (uint32_t bcr)
-{
- target_ulong size;
- int sh;
-
- sh = (bcr >> 17) & 0x7;
- if (sh == 7)
- size = -1;
- else
- size = (4 * 1024 * 1024) << sh;
-
- return size;
-}
-
-static void sdram_set_bcr (uint32_t *bcrp, uint32_t bcr, int enabled)
-{
- if (*bcrp & 0x00000001) {
- /* Unmap RAM */
-#ifdef DEBUG_SDRAM
- printf("%s: unmap RAM area " PADDRX " " ADDRX "\n",
- __func__, sdram_base(*bcrp), sdram_size(*bcrp));
-#endif
- cpu_register_physical_memory(sdram_base(*bcrp), sdram_size(*bcrp),
- IO_MEM_UNASSIGNED);
- }
- *bcrp = bcr & 0xFFDEE001;
- if (enabled && (bcr & 0x00000001)) {
-#ifdef DEBUG_SDRAM
- printf("%s: Map RAM area " PADDRX " " ADDRX "\n",
- __func__, sdram_base(bcr), sdram_size(bcr));
-#endif
- cpu_register_physical_memory(sdram_base(bcr), sdram_size(bcr),
- sdram_base(bcr) | IO_MEM_RAM);
- }
-}
-
-static void sdram_map_bcr (ppc4xx_sdram_t *sdram)
-{
- int i;
-
- for (i = 0; i < sdram->nbanks; i++) {
- if (sdram->ram_sizes[i] != 0) {
- sdram_set_bcr(&sdram->bcr[i],
- sdram_bcr(sdram->ram_bases[i], sdram->ram_sizes[i]),
- 1);
- } else {
- sdram_set_bcr(&sdram->bcr[i], 0x00000000, 0);
- }
- }
-}
-
-static void sdram_unmap_bcr (ppc4xx_sdram_t *sdram)
-{
- int i;
-
- for (i = 0; i < sdram->nbanks; i++) {
-#ifdef DEBUG_SDRAM
- printf("%s: Unmap RAM area " PADDRX " " ADDRX "\n",
- __func__, sdram_base(sdram->bcr[i]), sdram_size(sdram->bcr[i]));
-#endif
- cpu_register_physical_memory(sdram_base(sdram->bcr[i]),
- sdram_size(sdram->bcr[i]),
- IO_MEM_UNASSIGNED);
- }
-}
-
-static target_ulong dcr_read_sdram (void *opaque, int dcrn)
-{
- ppc4xx_sdram_t *sdram;
- target_ulong ret;
-
- sdram = opaque;
- switch (dcrn) {
- case SDRAM0_CFGADDR:
- ret = sdram->addr;
- break;
- case SDRAM0_CFGDATA:
- switch (sdram->addr) {
- case 0x00: /* SDRAM_BESR0 */
- ret = sdram->besr0;
- break;
- case 0x08: /* SDRAM_BESR1 */
- ret = sdram->besr1;
- break;
- case 0x10: /* SDRAM_BEAR */
- ret = sdram->bear;
- break;
- case 0x20: /* SDRAM_CFG */
- ret = sdram->cfg;
- break;
- case 0x24: /* SDRAM_STATUS */
- ret = sdram->status;
- break;
- case 0x30: /* SDRAM_RTR */
- ret = sdram->rtr;
- break;
- case 0x34: /* SDRAM_PMIT */
- ret = sdram->pmit;
- break;
- case 0x40: /* SDRAM_B0CR */
- ret = sdram->bcr[0];
- break;
- case 0x44: /* SDRAM_B1CR */
- ret = sdram->bcr[1];
- break;
- case 0x48: /* SDRAM_B2CR */
- ret = sdram->bcr[2];
- break;
- case 0x4C: /* SDRAM_B3CR */
- ret = sdram->bcr[3];
- break;
- case 0x80: /* SDRAM_TR */
- ret = -1; /* ? */
- break;
- case 0x94: /* SDRAM_ECCCFG */
- ret = sdram->ecccfg;
- break;
- case 0x98: /* SDRAM_ECCESR */
- ret = sdram->eccesr;
- break;
- default: /* Error */
- ret = -1;
- break;
- }
- break;
- default:
- /* Avoid gcc warning */
- ret = 0x00000000;
- break;
- }
-
- return ret;
-}
-
-static void dcr_write_sdram (void *opaque, int dcrn, target_ulong val)
-{
- ppc4xx_sdram_t *sdram;
-
- sdram = opaque;
- switch (dcrn) {
- case SDRAM0_CFGADDR:
- sdram->addr = val;
- break;
- case SDRAM0_CFGDATA:
- switch (sdram->addr) {
- case 0x00: /* SDRAM_BESR0 */
- sdram->besr0 &= ~val;
- break;
- case 0x08: /* SDRAM_BESR1 */
- sdram->besr1 &= ~val;
- break;
- case 0x10: /* SDRAM_BEAR */
- sdram->bear = val;
- break;
- case 0x20: /* SDRAM_CFG */
- val &= 0xFFE00000;
- if (!(sdram->cfg & 0x80000000) && (val & 0x80000000)) {
-#ifdef DEBUG_SDRAM
- printf("%s: enable SDRAM controller\n", __func__);
-#endif
- /* validate all RAM mappings */
- sdram_map_bcr(sdram);
- sdram->status &= ~0x80000000;
- } else if ((sdram->cfg & 0x80000000) && !(val & 0x80000000)) {
-#ifdef DEBUG_SDRAM
- printf("%s: disable SDRAM controller\n", __func__);
-#endif
- /* invalidate all RAM mappings */
- sdram_unmap_bcr(sdram);
- sdram->status |= 0x80000000;
- }
- if (!(sdram->cfg & 0x40000000) && (val & 0x40000000))
- sdram->status |= 0x40000000;
- else if ((sdram->cfg & 0x40000000) && !(val & 0x40000000))
- sdram->status &= ~0x40000000;
- sdram->cfg = val;
- break;
- case 0x24: /* SDRAM_STATUS */
- /* Read-only register */
- break;
- case 0x30: /* SDRAM_RTR */
- sdram->rtr = val & 0x3FF80000;
- break;
- case 0x34: /* SDRAM_PMIT */
- sdram->pmit = (val & 0xF8000000) | 0x07C00000;
- break;
- case 0x40: /* SDRAM_B0CR */
- sdram_set_bcr(&sdram->bcr[0], val, sdram->cfg & 0x80000000);
- break;
- case 0x44: /* SDRAM_B1CR */
- sdram_set_bcr(&sdram->bcr[1], val, sdram->cfg & 0x80000000);
- break;
- case 0x48: /* SDRAM_B2CR */
- sdram_set_bcr(&sdram->bcr[2], val, sdram->cfg & 0x80000000);
- break;
- case 0x4C: /* SDRAM_B3CR */
- sdram_set_bcr(&sdram->bcr[3], val, sdram->cfg & 0x80000000);
- break;
- case 0x80: /* SDRAM_TR */
- sdram->tr = val & 0x018FC01F;
- break;
- case 0x94: /* SDRAM_ECCCFG */
- sdram->ecccfg = val & 0x00F00000;
- break;
- case 0x98: /* SDRAM_ECCESR */
- val &= 0xFFF0F000;
- if (sdram->eccesr == 0 && val != 0)
- qemu_irq_raise(sdram->irq);
- else if (sdram->eccesr != 0 && val == 0)
- qemu_irq_lower(sdram->irq);
- sdram->eccesr = val;
- break;
- default: /* Error */
- break;
- }
- break;
- }
-}
-
-static void sdram_reset (void *opaque)
-{
- ppc4xx_sdram_t *sdram;
-
- sdram = opaque;
- sdram->addr = 0x00000000;
- sdram->bear = 0x00000000;
- sdram->besr0 = 0x00000000; /* No error */
- sdram->besr1 = 0x00000000; /* No error */
- sdram->cfg = 0x00000000;
- sdram->ecccfg = 0x00000000; /* No ECC */
- sdram->eccesr = 0x00000000; /* No error */
- sdram->pmit = 0x07C00000;
- sdram->rtr = 0x05F00000;
- sdram->tr = 0x00854009;
- /* We pre-initialize RAM banks */
- sdram->status = 0x00000000;
- sdram->cfg = 0x00800000;
- sdram_unmap_bcr(sdram);
-}
-
-void ppc405_sdram_init (CPUState *env, qemu_irq irq, int nbanks,
- target_phys_addr_t *ram_bases,
- target_phys_addr_t *ram_sizes,
- int do_init)
-{
- ppc4xx_sdram_t *sdram;
-
- sdram = qemu_mallocz(sizeof(ppc4xx_sdram_t));
- if (sdram != NULL) {
- sdram->irq = irq;
- sdram->nbanks = nbanks;
- memset(sdram->ram_bases, 0, 4 * sizeof(target_phys_addr_t));
- memcpy(sdram->ram_bases, ram_bases,
- nbanks * sizeof(target_phys_addr_t));
- memset(sdram->ram_sizes, 0, 4 * sizeof(target_phys_addr_t));
- memcpy(sdram->ram_sizes, ram_sizes,
- nbanks * sizeof(target_phys_addr_t));
- sdram_reset(sdram);
- qemu_register_reset(&sdram_reset, sdram);
- ppc_dcr_register(env, SDRAM0_CFGADDR,
- sdram, &dcr_read_sdram, &dcr_write_sdram);
- ppc_dcr_register(env, SDRAM0_CFGDATA,
- sdram, &dcr_read_sdram, &dcr_write_sdram);
- if (do_init)
- sdram_map_bcr(sdram);
- }
-}
-
-/*****************************************************************************/
/* Peripheral controller */
typedef struct ppc4xx_ebc_t ppc4xx_ebc_t;
struct ppc4xx_ebc_t {
Modified: trunk/hw/ppc4xx.h
===================================================================
--- trunk/hw/ppc4xx.h 2008-12-15 22:20:42 UTC (rev 6060)
+++ trunk/hw/ppc4xx.h 2008-12-15 22:59:34 UTC (rev 6061)
@@ -48,6 +48,11 @@
qemu_irq *ppcuic_init (CPUState *env, qemu_irq *irqs,
uint32_t dcr_base, int has_ssr, int has_vr);
+void ppc405_sdram_init (CPUState *env, qemu_irq irq, int nbanks,
+ target_phys_addr_t *ram_bases,
+ target_phys_addr_t *ram_sizes,
+ int do_init);
+
PCIBus *ppc4xx_pci_init(CPUState *env, qemu_irq pci_irqs[4],
target_phys_addr_t config_space,
target_phys_addr_t int_ack,
Modified: trunk/hw/ppc4xx_devs.c
===================================================================
--- trunk/hw/ppc4xx_devs.c 2008-12-15 22:20:42 UTC (rev 6060)
+++ trunk/hw/ppc4xx_devs.c 2008-12-15 22:59:34 UTC (rev 6061)
@@ -532,3 +532,344 @@
return qemu_allocate_irqs(&ppcuic_set_irq, uic, UIC_MAX_IRQ);
}
+
+/*****************************************************************************/
+/* SDRAM controller */
+typedef struct ppc4xx_sdram_t ppc4xx_sdram_t;
+struct ppc4xx_sdram_t {
+ uint32_t addr;
+ int nbanks;
+ target_phys_addr_t ram_bases[4];
+ target_phys_addr_t ram_sizes[4];
+ uint32_t besr0;
+ uint32_t besr1;
+ uint32_t bear;
+ uint32_t cfg;
+ uint32_t status;
+ uint32_t rtr;
+ uint32_t pmit;
+ uint32_t bcr[4];
+ uint32_t tr;
+ uint32_t ecccfg;
+ uint32_t eccesr;
+ qemu_irq irq;
+};
+
+enum {
+ SDRAM0_CFGADDR = 0x010,
+ SDRAM0_CFGDATA = 0x011,
+};
+
+/* XXX: TOFIX: some patches have made this code become inconsistent:
+ * there are type inconsistencies, mixing target_phys_addr_t, target_ulong
+ * and uint32_t
+ */
+static uint32_t sdram_bcr (target_phys_addr_t ram_base,
+ target_phys_addr_t ram_size)
+{
+ uint32_t bcr;
+
+ switch (ram_size) {
+ case (4 * 1024 * 1024):
+ bcr = 0x00000000;
+ break;
+ case (8 * 1024 * 1024):
+ bcr = 0x00020000;
+ break;
+ case (16 * 1024 * 1024):
+ bcr = 0x00040000;
+ break;
+ case (32 * 1024 * 1024):
+ bcr = 0x00060000;
+ break;
+ case (64 * 1024 * 1024):
+ bcr = 0x00080000;
+ break;
+ case (128 * 1024 * 1024):
+ bcr = 0x000A0000;
+ break;
+ case (256 * 1024 * 1024):
+ bcr = 0x000C0000;
+ break;
+ default:
+ printf("%s: invalid RAM size " PADDRX "\n", __func__, ram_size);
+ return 0x00000000;
+ }
+ bcr |= ram_base & 0xFF800000;
+ bcr |= 1;
+
+ return bcr;
+}
+
+static always_inline target_phys_addr_t sdram_base (uint32_t bcr)
+{
+ return bcr & 0xFF800000;
+}
+
+static target_ulong sdram_size (uint32_t bcr)
+{
+ target_ulong size;
+ int sh;
+
+ sh = (bcr >> 17) & 0x7;
+ if (sh == 7)
+ size = -1;
+ else
+ size = (4 * 1024 * 1024) << sh;
+
+ return size;
+}
+
+static void sdram_set_bcr (uint32_t *bcrp, uint32_t bcr, int enabled)
+{
+ if (*bcrp & 0x00000001) {
+ /* Unmap RAM */
+#ifdef DEBUG_SDRAM
+ printf("%s: unmap RAM area " PADDRX " " ADDRX "\n",
+ __func__, sdram_base(*bcrp), sdram_size(*bcrp));
+#endif
+ cpu_register_physical_memory(sdram_base(*bcrp), sdram_size(*bcrp),
+ IO_MEM_UNASSIGNED);
+ }
+ *bcrp = bcr & 0xFFDEE001;
+ if (enabled && (bcr & 0x00000001)) {
+#ifdef DEBUG_SDRAM
+ printf("%s: Map RAM area " PADDRX " " ADDRX "\n",
+ __func__, sdram_base(bcr), sdram_size(bcr));
+#endif
+ cpu_register_physical_memory(sdram_base(bcr), sdram_size(bcr),
+ sdram_base(bcr) | IO_MEM_RAM);
+ }
+}
+
+static void sdram_map_bcr (ppc4xx_sdram_t *sdram)
+{
+ int i;
+
+ for (i = 0; i < sdram->nbanks; i++) {
+ if (sdram->ram_sizes[i] != 0) {
+ sdram_set_bcr(&sdram->bcr[i],
+ sdram_bcr(sdram->ram_bases[i], sdram->ram_sizes[i]),
+ 1);
+ } else {
+ sdram_set_bcr(&sdram->bcr[i], 0x00000000, 0);
+ }
+ }
+}
+
+static void sdram_unmap_bcr (ppc4xx_sdram_t *sdram)
+{
+ int i;
+
+ for (i = 0; i < sdram->nbanks; i++) {
+#ifdef DEBUG_SDRAM
+ printf("%s: Unmap RAM area " PADDRX " " ADDRX "\n",
+ __func__, sdram_base(sdram->bcr[i]), sdram_size(sdram->bcr[i]));
+#endif
+ cpu_register_physical_memory(sdram_base(sdram->bcr[i]),
+ sdram_size(sdram->bcr[i]),
+ IO_MEM_UNASSIGNED);
+ }
+}
+
+static target_ulong dcr_read_sdram (void *opaque, int dcrn)
+{
+ ppc4xx_sdram_t *sdram;
+ target_ulong ret;
+
+ sdram = opaque;
+ switch (dcrn) {
+ case SDRAM0_CFGADDR:
+ ret = sdram->addr;
+ break;
+ case SDRAM0_CFGDATA:
+ switch (sdram->addr) {
+ case 0x00: /* SDRAM_BESR0 */
+ ret = sdram->besr0;
+ break;
+ case 0x08: /* SDRAM_BESR1 */
+ ret = sdram->besr1;
+ break;
+ case 0x10: /* SDRAM_BEAR */
+ ret = sdram->bear;
+ break;
+ case 0x20: /* SDRAM_CFG */
+ ret = sdram->cfg;
+ break;
+ case 0x24: /* SDRAM_STATUS */
+ ret = sdram->status;
+ break;
+ case 0x30: /* SDRAM_RTR */
+ ret = sdram->rtr;
+ break;
+ case 0x34: /* SDRAM_PMIT */
+ ret = sdram->pmit;
+ break;
+ case 0x40: /* SDRAM_B0CR */
+ ret = sdram->bcr[0];
+ break;
+ case 0x44: /* SDRAM_B1CR */
+ ret = sdram->bcr[1];
+ break;
+ case 0x48: /* SDRAM_B2CR */
+ ret = sdram->bcr[2];
+ break;
+ case 0x4C: /* SDRAM_B3CR */
+ ret = sdram->bcr[3];
+ break;
+ case 0x80: /* SDRAM_TR */
+ ret = -1; /* ? */
+ break;
+ case 0x94: /* SDRAM_ECCCFG */
+ ret = sdram->ecccfg;
+ break;
+ case 0x98: /* SDRAM_ECCESR */
+ ret = sdram->eccesr;
+ break;
+ default: /* Error */
+ ret = -1;
+ break;
+ }
+ break;
+ default:
+ /* Avoid gcc warning */
+ ret = 0x00000000;
+ break;
+ }
+
+ return ret;
+}
+
+static void dcr_write_sdram (void *opaque, int dcrn, target_ulong val)
+{
+ ppc4xx_sdram_t *sdram;
+
+ sdram = opaque;
+ switch (dcrn) {
+ case SDRAM0_CFGADDR:
+ sdram->addr = val;
+ break;
+ case SDRAM0_CFGDATA:
+ switch (sdram->addr) {
+ case 0x00: /* SDRAM_BESR0 */
+ sdram->besr0 &= ~val;
+ break;
+ case 0x08: /* SDRAM_BESR1 */
+ sdram->besr1 &= ~val;
+ break;
+ case 0x10: /* SDRAM_BEAR */
+ sdram->bear = val;
+ break;
+ case 0x20: /* SDRAM_CFG */
+ val &= 0xFFE00000;
+ if (!(sdram->cfg & 0x80000000) && (val & 0x80000000)) {
+#ifdef DEBUG_SDRAM
+ printf("%s: enable SDRAM controller\n", __func__);
+#endif
+ /* validate all RAM mappings */
+ sdram_map_bcr(sdram);
+ sdram->status &= ~0x80000000;
+ } else if ((sdram->cfg & 0x80000000) && !(val & 0x80000000)) {
+#ifdef DEBUG_SDRAM
+ printf("%s: disable SDRAM controller\n", __func__);
+#endif
+ /* invalidate all RAM mappings */
+ sdram_unmap_bcr(sdram);
+ sdram->status |= 0x80000000;
+ }
+ if (!(sdram->cfg & 0x40000000) && (val & 0x40000000))
+ sdram->status |= 0x40000000;
+ else if ((sdram->cfg & 0x40000000) && !(val & 0x40000000))
+ sdram->status &= ~0x40000000;
+ sdram->cfg = val;
+ break;
+ case 0x24: /* SDRAM_STATUS */
+ /* Read-only register */
+ break;
+ case 0x30: /* SDRAM_RTR */
+ sdram->rtr = val & 0x3FF80000;
+ break;
+ case 0x34: /* SDRAM_PMIT */
+ sdram->pmit = (val & 0xF8000000) | 0x07C00000;
+ break;
+ case 0x40: /* SDRAM_B0CR */
+ sdram_set_bcr(&sdram->bcr[0], val, sdram->cfg & 0x80000000);
+ break;
+ case 0x44: /* SDRAM_B1CR */
+ sdram_set_bcr(&sdram->bcr[1], val, sdram->cfg & 0x80000000);
+ break;
+ case 0x48: /* SDRAM_B2CR */
+ sdram_set_bcr(&sdram->bcr[2], val, sdram->cfg & 0x80000000);
+ break;
+ case 0x4C: /* SDRAM_B3CR */
+ sdram_set_bcr(&sdram->bcr[3], val, sdram->cfg & 0x80000000);
+ break;
+ case 0x80: /* SDRAM_TR */
+ sdram->tr = val & 0x018FC01F;
+ break;
+ case 0x94: /* SDRAM_ECCCFG */
+ sdram->ecccfg = val & 0x00F00000;
+ break;
+ case 0x98: /* SDRAM_ECCESR */
+ val &= 0xFFF0F000;
+ if (sdram->eccesr == 0 && val != 0)
+ qemu_irq_raise(sdram->irq);
+ else if (sdram->eccesr != 0 && val == 0)
+ qemu_irq_lower(sdram->irq);
+ sdram->eccesr = val;
+ break;
+ default: /* Error */
+ break;
+ }
+ break;
+ }
+}
+
+static void sdram_reset (void *opaque)
+{
+ ppc4xx_sdram_t *sdram;
+
+ sdram = opaque;
+ sdram->addr = 0x00000000;
+ sdram->bear = 0x00000000;
+ sdram->besr0 = 0x00000000; /* No error */
+ sdram->besr1 = 0x00000000; /* No error */
+ sdram->cfg = 0x00000000;
+ sdram->ecccfg = 0x00000000; /* No ECC */
+ sdram->eccesr = 0x00000000; /* No error */
+ sdram->pmit = 0x07C00000;
+ sdram->rtr = 0x05F00000;
+ sdram->tr = 0x00854009;
+ /* We pre-initialize RAM banks */
+ sdram->status = 0x00000000;
+ sdram->cfg = 0x00800000;
+ sdram_unmap_bcr(sdram);
+}
+
+void ppc405_sdram_init (CPUState *env, qemu_irq irq, int nbanks,
+ target_phys_addr_t *ram_bases,
+ target_phys_addr_t *ram_sizes,
+ int do_init)
+{
+ ppc4xx_sdram_t *sdram;
+
+ sdram = qemu_mallocz(sizeof(ppc4xx_sdram_t));
+ if (sdram != NULL) {
+ sdram->irq = irq;
+ sdram->nbanks = nbanks;
+ memset(sdram->ram_bases, 0, 4 * sizeof(target_phys_addr_t));
+ memcpy(sdram->ram_bases, ram_bases,
+ nbanks * sizeof(target_phys_addr_t));
+ memset(sdram->ram_sizes, 0, 4 * sizeof(target_phys_addr_t));
+ memcpy(sdram->ram_sizes, ram_sizes,
+ nbanks * sizeof(target_phys_addr_t));
+ sdram_reset(sdram);
+ qemu_register_reset(&sdram_reset, sdram);
+ ppc_dcr_register(env, SDRAM0_CFGADDR,
+ sdram, &dcr_read_sdram, &dcr_write_sdram);
+ ppc_dcr_register(env, SDRAM0_CFGDATA,
+ sdram, &dcr_read_sdram, &dcr_write_sdram);
+ if (do_init)
+ sdram_map_bcr(sdram);
+ }
+}
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- [Qemu-devel] [6061] target-ppc: move PPC4xx SDRAM controller emulation from ppc405_uc. c to ppc4xx_devs.c,
Aurelien Jarno <=