Add callbacks to allow dynamic change of PowerPC clocks (to be improved)

Fix embedded PowerPC watchdog and timers
Fix PowerPC 405 SPR
Add generic PowerPC 405 core instanciation code + resets support.
Implement simple peripherals shared by most PowerPC 405 implementations
PowerPC 405 EC & EP microcontrollers preliminary support


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2690 c046a42c-6fe2-441c-8c8c-71466251a162

Makefile.target

@@ -421,9 +421,9 @@ CPPFLAGS += -DHAS_AUDIO
 endif
 ifeq ($(TARGET_BASE_ARCH), ppc)
 VL_OBJS+= ppc.o ide.o pckbd.o ps2.o vga.o $(SOUND_HW) dma.o $(AUDIODRV)
-VL_OBJS+= mc146818rtc.o serial.o i8259.o i8254.o fdc.o m48t59.o
+VL_OBJS+= mc146818rtc.o serial.o i8259.o i8254.o fdc.o m48t59.o pflash_cfi02.o
 VL_OBJS+= ppc_prep.o ppc_chrp.o cuda.o adb.o openpic.o heathrow_pic.o mixeng.o
-VL_OBJS+= grackle_pci.o prep_pci.o unin_pci.o
+VL_OBJS+= grackle_pci.o prep_pci.o unin_pci.o ppc405_uc.o
 CPPFLAGS += -DHAS_AUDIO
 endif
 ifeq ($(TARGET_BASE_ARCH), mips)

hw/ppc.c

@@ -290,33 +290,55 @@ static void ppc405_set_irq (void *opaque, int pin, int level)
     int cur_level;
 
 #if defined(PPC_DEBUG_IRQ)
-    printf("%s: env %p pin %d level %d\n", __func__, env, pin, level);
+    if (loglevel & CPU_LOG_INT) {
+        fprintf(logfile, "%s: env %p pin %d level %d\n", __func__,
+                env, pin, level);
+    }
 #endif
     cur_level = (env->irq_input_state >> pin) & 1;
     /* Don't generate spurious events */
     if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) {
         switch (pin) {
         case PPC405_INPUT_RESET_SYS:
-            /* XXX: TODO: reset all peripherals */
-            /* No break here */
+            if (level) {
+#if defined(PPC_DEBUG_IRQ)
+                if (loglevel & CPU_LOG_INT) {
+                    fprintf(logfile, "%s: reset the PowerPC system\n",
+                            __func__);
+                }
+#endif
+                ppc40x_system_reset(env);
+            }
+            break;
         case PPC405_INPUT_RESET_CHIP:
-            /* XXX: TODO: reset on-chip peripherals */
+            if (level) {
+#if defined(PPC_DEBUG_IRQ)
+                if (loglevel & CPU_LOG_INT) {
+                    fprintf(logfile, "%s: reset the PowerPC chip\n", __func__);
+                }
+#endif
+                ppc40x_chip_reset(env);
+            }
+            break;
             /* No break here */
         case PPC405_INPUT_RESET_CORE:
             /* XXX: TODO: update DBSR[MRR] */
             if (level) {
-#if 0 // XXX: TOFIX
 #if defined(PPC_DEBUG_IRQ)
-                printf("%s: reset the CPU\n", __func__);
-#endif
-                cpu_reset(env);
+                if (loglevel & CPU_LOG_INT) {
+                    fprintf(logfile, "%s: reset the PowerPC core\n", __func__);
+                }
 #endif
+                ppc40x_core_reset(env);
             }
             break;
         case PPC405_INPUT_CINT:
             /* Level sensitive - active high */
 #if defined(PPC_DEBUG_IRQ)
-            printf("%s: set the critical IRQ state to %d\n", __func__, level);
+            if (loglevel & CPU_LOG_INT) {
+                fprintf(logfile, "%s: set the critical IRQ state to %d\n",
+                        __func__, level);
+            }
 #endif
             /* XXX: TOFIX */
             ppc_set_irq(env, PPC_INTERRUPT_RESET, level);
@@ -538,8 +560,21 @@ static void cpu_ppc_decr_cb (void *opaque)
     _cpu_ppc_store_decr(opaque, 0x00000000, 0xFFFFFFFF, 1);
 }
 
+static void cpu_ppc_set_tb_clk (void *opaque, uint32_t freq)
+{
+    CPUState *env = opaque;
+    ppc_tb_t *tb_env = env->tb_env;
+
+    tb_env->tb_freq = freq;
+    /* There is a bug in Linux 2.4 kernels:
+     * if a decrementer exception is pending when it enables msr_ee at startup,
+     * it's not ready to handle it...
+     */
+    _cpu_ppc_store_decr(env, 0xFFFFFFFF, 0xFFFFFFFF, 0);
+}
+
 /* Set up (once) timebase frequency (in Hz) */
-ppc_tb_t *cpu_ppc_tb_init (CPUState *env, uint32_t freq)
+clk_setup_cb cpu_ppc_tb_init (CPUState *env, uint32_t freq)
 {
     ppc_tb_t *tb_env;
 
@@ -547,23 +582,15 @@ ppc_tb_t *cpu_ppc_tb_init (CPUState *env, uint32_t freq)
     if (tb_env == NULL)
         return NULL;
     env->tb_env = tb_env;
-    if (tb_env->tb_freq == 0 || 1) {
-        tb_env->tb_freq = freq;
-        /* Create new timer */
-        tb_env->decr_timer =
-            qemu_new_timer(vm_clock, &cpu_ppc_decr_cb, env);
-        /* There is a bug in Linux 2.4 kernels:
-         * if a decrementer exception is pending when it enables msr_ee,
-         * it's not ready to handle it...
-         */
-        _cpu_ppc_store_decr(env, 0xFFFFFFFF, 0xFFFFFFFF, 0);
-    }
+    /* Create new timer */
+    tb_env->decr_timer = qemu_new_timer(vm_clock, &cpu_ppc_decr_cb, env);
+    cpu_ppc_set_tb_clk(env, freq);
 
-    return tb_env;
+    return &cpu_ppc_set_tb_clk;
 }
 
 /* Specific helpers for POWER & PowerPC 601 RTC */
-ppc_tb_t *cpu_ppc601_rtc_init (CPUState *env)
+clk_setup_cb cpu_ppc601_rtc_init (CPUState *env)
 {
     return cpu_ppc_tb_init(env, 7812500);
 }
@@ -733,10 +760,14 @@ static void cpu_4xx_wdt_cb (void *opaque)
             /* No reset */
             break;
         case 0x1: /* Core reset */
+            ppc40x_core_reset(env);
+            break;
         case 0x2: /* Chip reset */
+            ppc40x_chip_reset(env);
+            break;
         case 0x3: /* System reset */
-            qemu_system_reset_request();
-            return;
+            ppc40x_system_reset(env);
+            break;
         }
     }
 }
@@ -784,20 +815,25 @@ void store_booke_tsr (CPUState *env, target_ulong val)
 
 void store_booke_tcr (CPUState *env, target_ulong val)
 {
-    /* We don't update timers now. Maybe we should... */
     env->spr[SPR_40x_TCR] = val & 0xFF800000;
+    cpu_4xx_wdt_cb(env);
 }
 
-void ppc_emb_timers_init (CPUState *env)
+clk_setup_cb ppc_emb_timers_init (CPUState *env, uint32_t freq)
 {
     ppc_tb_t *tb_env;
     ppcemb_timer_t *ppcemb_timer;
 
-    tb_env = env->tb_env;
+    tb_env = qemu_mallocz(sizeof(ppc_tb_t));
+    if (tb_env == NULL)
+        return NULL;
+    env->tb_env = tb_env;
     ppcemb_timer = qemu_mallocz(sizeof(ppcemb_timer_t));
+    tb_env->tb_freq = freq;
     tb_env->opaque = ppcemb_timer;
-    if (loglevel)
+    if (loglevel) {
         fprintf(logfile, "%s %p %p\n", __func__, tb_env, ppcemb_timer);
+    }
     if (ppcemb_timer != NULL) {
         /* We use decr timer for PIT */
         tb_env->decr_timer = qemu_new_timer(vm_clock, &cpu_4xx_pit_cb, env);
@@ -806,6 +842,9 @@ void ppc_emb_timers_init (CPUState *env)
         ppcemb_timer->wdt_timer =
             qemu_new_timer(vm_clock, &cpu_4xx_wdt_cb, env);
     }
+
+    /* XXX: TODO: add callback for clock frequency change */
+    return NULL;
 }
 
 /*****************************************************************************/

target-ppc/cpu.h

@@ -880,6 +880,7 @@ void cpu_ppc601_store_rtcl (CPUPPCState *env, uint32_t value);
 void cpu_ppc601_store_rtcu (CPUPPCState *env, uint32_t value);
 target_ulong load_40x_pit (CPUPPCState *env);
 void store_40x_pit (CPUPPCState *env, target_ulong val);
+void store_40x_dbcr0 (CPUPPCState *env, uint32_t val);
 void store_booke_tcr (CPUPPCState *env, target_ulong val);
 void store_booke_tsr (CPUPPCState *env, target_ulong val);
 void ppc_tlb_invalidate_all (CPUPPCState *env);

target-ppc/exec.h

@@ -109,6 +109,7 @@ void ppc6xx_tlb_invalidate_virt (CPUState *env, target_ulong eaddr,
                                  int is_code);
 void ppc6xx_tlb_store (CPUState *env, target_ulong EPN, int way, int is_code,
                        target_ulong pte0, target_ulong pte1);
+void ppc4xx_tlb_invalidate_all (CPUState *env);
 
 static inline void env_to_regs(void)
 {

target-ppc/op.c

@@ -2454,6 +2454,11 @@ void OPPROTO op_store_40x_pit (void)
     RETURN();
 }
 
+void OPPROTO op_store_40x_dbcr0 (void)
+{
+    store_40x_dbcr0(env, T0);
+}
+
 void OPPROTO op_store_booke_tcr (void)
 {
     store_booke_tcr(env, T0);

target-ppc/translate_init.c

@@ -344,6 +344,15 @@ static void spr_write_40x_pit (void *opaque, int sprn)
     gen_op_store_40x_pit();
 }
 
+static void spr_write_40x_dbcr0 (void *opaque, int sprn)
+{
+    DisasContext *ctx = opaque;
+
+    gen_op_store_40x_dbcr0();
+    /* We must stop translation as we may have rebooted */
+    RET_STOP(ctx);
+}
+
 static void spr_write_booke_tcr (void *opaque, int sprn)
 {
     gen_op_store_booke_tcr();
@@ -1175,7 +1184,7 @@ static void gen_spr_BookE (CPUPPCState *env)
     /* XXX : not implemented */
     spr_register(env, SPR_BOOKE_DBSR, "DBSR",
                  SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_generic,
+                 &spr_read_generic, &spr_write_clear,
                  0x00000000);
     spr_register(env, SPR_BOOKE_DEAR, "DEAR",
                  SPR_NOACCESS, SPR_NOACCESS,
@@ -1651,13 +1660,13 @@ static void gen_spr_40x (CPUPPCState *env)
     /* XXX : not implemented */
     spr_register(env, SPR_40x_DBCR0, "DBCR0",
                  SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_generic,
+                 &spr_read_generic, &spr_write_40x_dbcr0,
                  0x00000000);
     /* XXX : not implemented */
     spr_register(env, SPR_40x_DBSR, "DBSR",
                  SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_generic,
-                 /* Last reset was system reset (system boot */
+                 &spr_read_generic, &spr_write_clear,
+                 /* Last reset was system reset */
                  0x00000300);
     /* XXX : not implemented */
     spr_register(env, SPR_40x_IAC1, "IAC1",
@@ -1751,17 +1760,6 @@ static void gen_spr_405 (CPUPPCState *env)
                  &spr_read_ureg, SPR_NOACCESS,
                  &spr_read_ureg, SPR_NOACCESS,
                  0x00000000);
-    /* Debug */
-    /* XXX : not implemented */
-    spr_register(env, SPR_40x_DAC2, "DAC2",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_generic,
-                 0x00000000);
-    /* XXX : not implemented */
-    spr_register(env, SPR_40x_IAC2, "IAC2",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_generic,
-                 0x00000000);
 }
 
 /* SPR shared between PowerPC 401 & 403 implementations */

vl.h

@@ -1151,7 +1151,19 @@ extern QEMUMachine shix_machine;
 
 #ifdef TARGET_PPC
 /* PowerPC hardware exceptions management helpers */
-ppc_tb_t *cpu_ppc_tb_init (CPUState *env, uint32_t freq);
+typedef void (*clk_setup_cb)(void *opaque, uint32_t freq);
+typedef struct clk_setup_t clk_setup_t;
+struct clk_setup_t {
+    clk_setup_cb cb;
+    void *opaque;
+};
+static inline void clk_setup (clk_setup_t *clk, uint32_t freq)
+{
+    if (clk->cb != NULL)
+        (*clk->cb)(clk->opaque, freq);
+}
+
+clk_setup_cb cpu_ppc_tb_init (CPUState *env, uint32_t freq);
 /* Embedded PowerPC DCR management */
 typedef target_ulong (*dcr_read_cb)(void *opaque, int dcrn);
 typedef void (*dcr_write_cb)(void *opaque, int dcrn, target_ulong val);
@@ -1159,6 +1171,59 @@ int ppc_dcr_init (CPUState *env, int (*dcr_read_error)(int dcrn),
                   int (*dcr_write_error)(int dcrn));
 int ppc_dcr_register (CPUState *env, int dcrn, void *opaque,
                       dcr_read_cb drc_read, dcr_write_cb dcr_write);
+clk_setup_cb ppc_emb_timers_init (CPUState *env, uint32_t freq);
+/* PowerPC 405 core */
+CPUPPCState *ppc405_init (const unsigned char *cpu_model,
+                          clk_setup_t *cpu_clk, clk_setup_t *tb_clk,
+                          uint32_t sysclk);
+void ppc40x_core_reset (CPUState *env);
+void ppc40x_chip_reset (CPUState *env);
+void ppc40x_system_reset (CPUState *env);
+/* */
+typedef struct ppc4xx_mmio_t ppc4xx_mmio_t;
+int ppc4xx_mmio_register (CPUState *env, ppc4xx_mmio_t *mmio,
+                          uint32_t offset, uint32_t len,
+                          CPUReadMemoryFunc **mem_read,
+                          CPUWriteMemoryFunc **mem_write, void *opaque);
+ppc4xx_mmio_t *ppc4xx_mmio_init (CPUState *env, uint32_t base);
+/* PowerPC 4xx peripheral local bus arbitrer */
+void ppc4xx_plb_init (CPUState *env);
+/* PLB to OPB bridge */
+void ppc4xx_pob_init (CPUState *env);
+/* OPB arbitrer */
+void ppc4xx_opba_init (CPUState *env, ppc4xx_mmio_t *mmio, uint32_t offset);
+/* PowerPC 4xx universal interrupt controller */
+enum {
+    PPCUIC_OUTPUT_INT = 0,
+    PPCUIC_OUTPUT_CINT = 1,
+    PPCUIC_OUTPUT_NB,
+};
+qemu_irq *ppcuic_init (CPUState *env, qemu_irq *irqs,
+                       uint32_t dcr_base, int has_ssr, int has_vr);
+/* SDRAM controller */
+void ppc405_sdram_init (CPUState *env, qemu_irq irq, int nbanks,
+                        target_ulong *ram_bases, target_ulong *ram_sizes);
+/* Peripheral controller */
+void ppc405_ebc_init (CPUState *env);
+/* DMA controller */
+void ppc405_dma_init (CPUState *env, qemu_irq irqs[4]);
+/* GPIO */
+void ppc405_gpio_init (CPUState *env, ppc4xx_mmio_t *mmio, uint32_t offset);
+/* Serial ports */
+void ppc405_serial_init (CPUState *env, ppc4xx_mmio_t *mmio,
+                         uint32_t offset, qemu_irq irq,
+                         CharDriverState *chr);
+/* On Chip Memory */
+void ppc405_ocm_init (CPUState *env, unsigned long offset);
+/* I2C controller */
+void ppc405_i2c_init (CPUState *env, ppc4xx_mmio_t *mmio, uint32_t offset);
+/* PowerPC 405 microcontrollers */
+CPUState *ppc405cr_init (target_ulong ram_bases[4], target_ulong ram_sizes[4],
+                         uint32_t sysclk, qemu_irq **picp,
+                         ram_addr_t *offsetp);
+CPUState *ppc405ep_init (target_ulong ram_bases[2], target_ulong ram_sizes[2],
+                         uint32_t sysclk, qemu_irq **picp,
+                         ram_addr_t *offsetp);
 #endif
 void PREP_debug_write (void *opaque, uint32_t addr, uint32_t val);