* Patch by Steven Scholz, 27 Feb 2004:

  - Adding get_ticks() and get_tbclk() for AT91RM9200
  - Many white space fixes in cpu/at91rm9200/interrupts.c

* Patches by Steven Scholz, 20 Feb 2004:
  some cleanup in AT91RM9200 related code

diff --git a/CHANGELOG b/CHANGELOG
index 44f6f609f9a6b70022d7b31fdf3cf5c1e9467549..189c1305a6fe6190bfc6282e9e5217edf5c8eed5 100644 (file)
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -2,6 +2,13 @@
 Changes for U-Boot 1.0.2:
 ======================================================================
 
+* Patch by Steven Scholz, 27 Feb 2004:
+  - Adding get_ticks() and get_tbclk() for AT91RM9200
+  - Many white space fixes in cpu/at91rm9200/interrupts.c
+
+* Patches by Steven Scholz, 20 Feb 2004:
+  some cleanup in AT91RM9200 related code
+
 * Patches by Travis Sawyer, 12 Mar 2004:
   - Fix Gigabit Ethernet support for 440GX
   - Add Gigabit Ethernet Support to MII PHY utilities

diff --git a/Makefile b/Makefile
index 605a19ad22d2d19cac670e5a118995a7eeadd776..bb97631661475c37c8ec7367cdc56977a1ce4c78 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -905,9 +905,6 @@ ZUMA_config:        unconfig
 ## StrongARM Systems
 #########################################################################
 
-at91rm9200dk_config    :       unconfig
-       @./mkconfig $(@:_config=) arm at91rm9200 at91rm9200dk
-
 dnp1110_config :       unconfig
        @./mkconfig $(@:_config=) arm sa1100 dnp1110
 
@@ -1013,6 +1010,13 @@ ep7312_config    :       unconfig
 modnet50_config :      unconfig
        @./mkconfig $(@:_config=) arm arm720t modnet50
 
+#########################################################################
+## AT91RM9200 Systems
+#########################################################################
+
+at91rm9200dk_config    :       unconfig
+       @./mkconfig $(@:_config=) arm at91rm9200 at91rm9200dk
+
 #########################################################################
 ## XScale Systems
 #########################################################################

diff --git a/cpu/at91rm9200/interrupts.c b/cpu/at91rm9200/interrupts.c
index 407df9c29551d93a48582da3a2ced875b5294258..d3adc437385dc82d43c4eaf598923ddf62e7ea98 100644 (file)
--- a/cpu/at91rm9200/interrupts.c
+++ b/cpu/at91rm9200/interrupts.c
@@ -41,111 +41,114 @@ extern void reset_cpu(ulong addr);
 #define TIMER_LOAD_VAL 0xffff
 
 /* macro to read the 16 bit timer */
-#define READ_TIMER (tmr->TC_CV)
+#define READ_TIMER (tmr->TC_CV & 0x0000ffff)
 AT91PS_TC tmr;
 
-
+#ifdef CONFIG_USE_IRQ
+#error There is no IRQ support for AT91RM9200 in U-Boot yet.
+#else
 void enable_interrupts (void)
 {
-    return;
+       return;
 }
 int disable_interrupts (void)
 {
-    return 0;
+       return 0;
 }
+#endif
 
 
-void bad_mode(void)
+void bad_mode (void)
 {
-    panic("Resetting CPU ...\n");
-    reset_cpu(0);
+       panic ("Resetting CPU ...\n");
+       reset_cpu (0);
 }
 
-void show_regs(struct pt_regs * regs)
+void show_regs (struct pt_regs *regs)
 {
-    unsigned long flags;
-const char *processor_modes[]=
-{ "USER_26", "FIQ_26" , "IRQ_26" , "SVC_26" , "UK4_26" , "UK5_26" , "UK6_26" , "UK7_26" ,
-  "UK8_26" , "UK9_26" , "UK10_26", "UK11_26", "UK12_26", "UK13_26", "UK14_26", "UK15_26",
-  "USER_32", "FIQ_32" , "IRQ_32" , "SVC_32" , "UK4_32" , "UK5_32" , "UK6_32" , "ABT_32" ,
-  "UK8_32" , "UK9_32" , "UK10_32", "UND_32" , "UK12_32", "UK13_32", "UK14_32", "SYS_32"
-};
-
-    flags = condition_codes(regs);
-
-    printf("pc : [<%08lx>]    lr : [<%08lx>]\n"
-          "sp : %08lx  ip : %08lx  fp : %08lx\n",
-          instruction_pointer(regs),
-          regs->ARM_lr, regs->ARM_sp,
-          regs->ARM_ip, regs->ARM_fp);
-    printf("r10: %08lx  r9 : %08lx  r8 : %08lx\n",
-          regs->ARM_r10, regs->ARM_r9,
-          regs->ARM_r8);
-    printf("r7 : %08lx  r6 : %08lx  r5 : %08lx  r4 : %08lx\n",
-          regs->ARM_r7, regs->ARM_r6,
-          regs->ARM_r5, regs->ARM_r4);
-    printf("r3 : %08lx  r2 : %08lx  r1 : %08lx  r0 : %08lx\n",
-          regs->ARM_r3, regs->ARM_r2,
-          regs->ARM_r1, regs->ARM_r0);
-    printf("Flags: %c%c%c%c",
-          flags & CC_N_BIT ? 'N' : 'n',
-          flags & CC_Z_BIT ? 'Z' : 'z',
-          flags & CC_C_BIT ? 'C' : 'c',
-          flags & CC_V_BIT ? 'V' : 'v');
-    printf("  IRQs %s  FIQs %s  Mode %s%s\n",
-          interrupts_enabled(regs) ? "on" : "off",
-          fast_interrupts_enabled(regs) ? "on" : "off",
-          processor_modes[processor_mode(regs)],
-          thumb_mode(regs) ? " (T)" : "");
+       unsigned long flags;
+       const char *processor_modes[] = {
+       "USER_26",      "FIQ_26",       "IRQ_26",       "SVC_26",
+       "UK4_26",       "UK5_26",       "UK6_26",       "UK7_26",
+       "UK8_26",       "UK9_26",       "UK10_26",      "UK11_26",
+       "UK12_26",      "UK13_26",      "UK14_26",      "UK15_26",
+       "USER_32",      "FIQ_32",       "IRQ_32",       "SVC_32",
+       "UK4_32",       "UK5_32",       "UK6_32",       "ABT_32",
+       "UK8_32",       "UK9_32",       "UK10_32",      "UND_32",
+       "UK12_32",      "UK13_32",      "UK14_32",      "SYS_32",
+       };
+
+       flags = condition_codes (regs);
+
+       printf ("pc : [<%08lx>]    lr : [<%08lx>]\n"
+               "sp : %08lx  ip : %08lx  fp : %08lx\n",
+               instruction_pointer (regs),
+               regs->ARM_lr, regs->ARM_sp, regs->ARM_ip, regs->ARM_fp);
+       printf ("r10: %08lx  r9 : %08lx  r8 : %08lx\n",
+               regs->ARM_r10, regs->ARM_r9, regs->ARM_r8);
+       printf ("r7 : %08lx  r6 : %08lx  r5 : %08lx  r4 : %08lx\n",
+               regs->ARM_r7, regs->ARM_r6, regs->ARM_r5, regs->ARM_r4);
+       printf ("r3 : %08lx  r2 : %08lx  r1 : %08lx  r0 : %08lx\n",
+               regs->ARM_r3, regs->ARM_r2, regs->ARM_r1, regs->ARM_r0);
+       printf ("Flags: %c%c%c%c",
+               flags & CC_N_BIT ? 'N' : 'n',
+               flags & CC_Z_BIT ? 'Z' : 'z',
+               flags & CC_C_BIT ? 'C' : 'c',
+               flags & CC_V_BIT ? 'V' : 'v');
+       printf ("  IRQs %s  FIQs %s  Mode %s%s\n",
+               interrupts_enabled (regs) ? "on" : "off",
+               fast_interrupts_enabled (regs) ? "on" : "off",
+               processor_modes[processor_mode (regs)],
+               thumb_mode (regs) ? " (T)" : "");
 }
 
-void do_undefined_instruction(struct pt_regs *pt_regs)
+void do_undefined_instruction (struct pt_regs *pt_regs)
 {
-    printf("undefined instruction\n");
-    show_regs(pt_regs);
-    bad_mode();
+       printf ("undefined instruction\n");
+       show_regs (pt_regs);
+       bad_mode ();
 }
 
-void do_software_interrupt(struct pt_regs *pt_regs)
+void do_software_interrupt (struct pt_regs *pt_regs)
 {
-    printf("software interrupt\n");
-    show_regs(pt_regs);
-    bad_mode();
+       printf ("software interrupt\n");
+       show_regs (pt_regs);
+       bad_mode ();
 }
 
-void do_prefetch_abort(struct pt_regs *pt_regs)
+void do_prefetch_abort (struct pt_regs *pt_regs)
 {
-    printf("prefetch abort\n");
-    show_regs(pt_regs);
-    bad_mode();
+       printf ("prefetch abort\n");
+       show_regs (pt_regs);
+       bad_mode ();
 }
 
-void do_data_abort(struct pt_regs *pt_regs)
+void do_data_abort (struct pt_regs *pt_regs)
 {
-    printf("data abort\n");
-    show_regs(pt_regs);
-    bad_mode();
+       printf ("data abort\n");
+       show_regs (pt_regs);
+       bad_mode ();
 }
 
-void do_not_used(struct pt_regs *pt_regs)
+void do_not_used (struct pt_regs *pt_regs)
 {
-    printf("not used\n");
-    show_regs(pt_regs);
-    bad_mode();
+       printf ("not used\n");
+       show_regs (pt_regs);
+       bad_mode ();
 }
 
-void do_fiq(struct pt_regs *pt_regs)
+void do_fiq (struct pt_regs *pt_regs)
 {
-    printf("fast interrupt request\n");
-    show_regs(pt_regs);
-    bad_mode();
+       printf ("fast interrupt request\n");
+       show_regs (pt_regs);
+       bad_mode ();
 }
 
-void do_irq(struct pt_regs *pt_regs)
+void do_irq (struct pt_regs *pt_regs)
 {
-    printf("interrupt request\n");
-    show_regs(pt_regs);
-    bad_mode();
+       printf ("interrupt request\n");
+       show_regs (pt_regs);
+       bad_mode ();
 }
 
 static ulong timestamp;
@@ -154,81 +157,103 @@ static ulong lastinc;
 int interrupt_init (void)
 {
 
-    tmr = AT91C_BASE_TC0;
+       tmr = AT91C_BASE_TC0;
+
+       /* enables TC1.0 clock */
+       *AT91C_PMC_PCER = 1 << AT91C_ID_TC0;  /* enable clock */
 
-    /* enables TC1.0 clock */
-    *AT91C_PMC_PCER = 1 << AT91C_ID_TC0;  /* enable clock */
+       *AT91C_TCB0_BCR = 0;
+       *AT91C_TCB0_BMR = AT91C_TCB_TC0XC0S_NONE | AT91C_TCB_TC1XC1S_NONE | AT91C_TCB_TC2XC2S_NONE;
+       tmr->TC_CCR = AT91C_TC_CLKDIS;
+       tmr->TC_CMR = AT91C_TC_TIMER_DIV1_CLOCK;  /* set to MCLK/2 */
 
-    *AT91C_TCB0_BCR = 0;
-    *AT91C_TCB0_BMR = AT91C_TCB_TC0XC0S_NONE | AT91C_TCB_TC1XC1S_NONE | AT91C_TCB_TC2XC2S_NONE;
-    tmr->TC_CCR = AT91C_TC_CLKDIS;
-    tmr->TC_CMR = AT91C_TC_TIMER_DIV1_CLOCK;  /* set to MCLK/2 */
+       tmr->TC_IDR = ~0ul;
+       tmr->TC_RC = TIMER_LOAD_VAL;
+       lastinc = TIMER_LOAD_VAL;
+       tmr->TC_CCR = AT91C_TC_SWTRG | AT91C_TC_CLKEN;
+       timestamp = 0;
 
-    tmr->TC_IDR = ~0ul;
-    tmr->TC_RC = TIMER_LOAD_VAL;
-    lastinc = TIMER_LOAD_VAL;
-    tmr->TC_CCR = AT91C_TC_SWTRG | AT91C_TC_CLKEN;
-    timestamp = 0;
-    return (0);
+       return (0);
 }
 
 /*
  * timer without interrupts
  */
 
-void reset_timer(void)
+void reset_timer (void)
 {
-    reset_timer_masked();
+       reset_timer_masked ();
 }
 
 ulong get_timer (ulong base)
 {
-    return get_timer_masked() - base;
+       return get_timer_masked () - base;
 }
 
 void set_timer (ulong t)
 {
-    timestamp = t;
+       timestamp = t;
 }
 
-void udelay(unsigned long usec)
+void udelay (unsigned long usec)
 {
-    udelay_masked(usec);
+       udelay_masked(usec);
 }
 
-void reset_timer_masked(void)
+void reset_timer_masked (void)
 {
-    /* reset time */
-    lastinc = READ_TIMER;
-    timestamp = 0;
+       /* reset time */
+       lastinc = READ_TIMER;
+       timestamp = 0;
 }
 
-ulong get_timer_masked(void)
+ulong get_timer_masked (void)
 {
-    ulong now = READ_TIMER;
-    if (now >= lastinc)
-    {
-       /* normal mode */
-       timestamp += now - lastinc;
-    } else {
-       /* we have an overflow ... */
-       timestamp += now + TIMER_LOAD_VAL - lastinc;
-    }
-    lastinc = now;
-
-    return timestamp;
+       ulong now = READ_TIMER;
+
+       if (now >= lastinc) {
+               /* normal mode */
+               timestamp += now - lastinc;
+       } else {
+               /* we have an overflow ... */
+               timestamp += now + TIMER_LOAD_VAL - lastinc;
+       }
+       lastinc = now;
+
+       return timestamp;
 }
 
-void udelay_masked(unsigned long usec)
+void udelay_masked (unsigned long usec)
 {
-    ulong tmo;
+       ulong tmo;
+
+       tmo = usec / 1000;
+       tmo *= CFG_HZ;
+       tmo /= 1000;
+
+       reset_timer_masked ();
+
+       while (get_timer_masked () < tmo)
+               /*NOP*/;
+}
 
-    tmo = usec / 1000;
-    tmo *= CFG_HZ;
-    tmo /= 1000;
+/*
+ * This function is derived from PowerPC code (read timebase as long long).
+ * On ARM it just returns the timer value.
+ */
+unsigned long long get_ticks(void)
+{
+       return get_timer(0);
+}
 
-    reset_timer_masked();
+/*
+ * This function is derived from PowerPC code (timebase clock frequency).
+ * On ARM it returns the number of timer ticks per second.
+ */
+ulong get_tbclk (void)
+{
+       ulong tbclk;
 
-    while(get_timer_masked() < tmo);
-      /*NOP*/;
+       tbclk = CFG_HZ;
+       return tbclk;
 }

diff --git a/cpu/at91rm9200/serial.c b/cpu/at91rm9200/serial.c
index f80fd4320c5ea0d1152926b024473920a324ae82..43e15535e6b6c7cc5e945631ee2417ccd20e64ae 100644 (file)
--- a/cpu/at91rm9200/serial.c
+++ b/cpu/at91rm9200/serial.c
@@ -36,55 +36,54 @@
 /* ggi thunder */
 AT91PS_USART us = (AT91PS_USART) AT91C_BASE_DBGU;
 
-void serial_setbrg(void)
-  {
-  DECLARE_GLOBAL_DATA_PTR;
-  int baudrate;
+void serial_setbrg (void)
+{
+       DECLARE_GLOBAL_DATA_PTR;
+       int baudrate;
 
-  if ((baudrate = gd->bd->bi_baudrate) <= 0)
-    baudrate = CONFIG_BAUDRATE;
-  us->US_BRGR = 33 /* AT91C_MASTER_CLOCK / baudrate / 16 */; /* hardcode so no __divsi3 */
-  }
+       if ((baudrate = gd->bd->bi_baudrate) <= 0)
+               baudrate = CONFIG_BAUDRATE;
+       us->US_BRGR = CFG_AT91C_BRGR_DIVISOR;   /* hardcode so no __divsi3 */
+}
 
-int serial_init(void)
-  {
-  /* make any port initializations specific to this port */
-  *AT91C_PIOA_PDR = AT91C_PA31_DTXD | AT91C_PA30_DRXD;  /* PA 31 & 30 */
-  *AT91C_PMC_PCER = 1 << AT91C_ID_SYS;  /* enable clock */
-  serial_setbrg();
+int serial_init (void)
+{
+       /* make any port initializations specific to this port */
+       *AT91C_PIOA_PDR = AT91C_PA31_DTXD | AT91C_PA30_DRXD;    /* PA 31 & 30 */
+       *AT91C_PMC_PCER = 1 << AT91C_ID_SYS;    /* enable clock */
+       serial_setbrg ();
 
-  us->US_CR = AT91C_US_RSTRX | AT91C_US_RSTTX;
-  us->US_CR = AT91C_US_RXEN | AT91C_US_TXEN;
-  us->US_MR = ( AT91C_US_CLKS_CLOCK | AT91C_US_CHRL_8_BITS | AT91C_US_PAR_NONE | AT91C_US_NBSTOP_1_BIT );
-  us->US_IMR = ~0ul;
-  return (0);
-  }
+       us->US_CR = AT91C_US_RSTRX | AT91C_US_RSTTX;
+       us->US_CR = AT91C_US_RXEN | AT91C_US_TXEN;
+       us->US_MR =
+               (AT91C_US_CLKS_CLOCK | AT91C_US_CHRL_8_BITS |
+                AT91C_US_PAR_NONE | AT91C_US_NBSTOP_1_BIT);
+       us->US_IMR = ~0ul;
+       return (0);
+}
 
-void serial_putc(const char c)
-  {
-  if (c == '\n')
-    serial_putc('\r');
-  while( (us->US_CSR & AT91C_US_TXRDY) == 0 )
-    ;
-  us->US_THR=c;
-  }
+void serial_putc (const char c)
+{
+       if (c == '\n')
+               serial_putc ('\r');
+       while ((us->US_CSR & AT91C_US_TXRDY) == 0);
+       us->US_THR = c;
+}
 
-void
-serial_puts (const char *s)
-  {
-  while (*s)
-    {
-    serial_putc (*s++);
-    }
-  }
+void serial_puts (const char *s)
+{
+       while (*s) {
+               serial_putc (*s++);
+       }
+}
 
-int serial_getc(void)
-  {
-  while( (us->US_CSR & AT91C_US_RXRDY) == 0 );
-  return us->US_RHR;
-  }
+int serial_getc (void)
+{
+       while ((us->US_CSR & AT91C_US_RXRDY) == 0);
+       return us->US_RHR;
+}
 
-int serial_tstc(void)
-  {
-  return ((us->US_CSR & AT91C_US_RXRDY) == AT91C_US_RXRDY);
-  }
+int serial_tstc (void)
+{
+       return ((us->US_CSR & AT91C_US_RXRDY) == AT91C_US_RXRDY);
+}

diff --git a/include/asm-arm/arch-at91rm9200/hardware.h b/include/asm-arm/arch-at91rm9200/hardware.h
index 2bad8a9bd2e3605e8f85c5007f1e064a2661d491..19d799d539d2bd5fbfcb06acf75900ad9f60d1be 100644 (file)
--- a/include/asm-arm/arch-at91rm9200/hardware.h
+++ b/include/asm-arm/arch-at91rm9200/hardware.h
@@ -28,11 +28,6 @@
 #include "AT91RM9200_inc.h"
 #endif
 
-/* AT91RM92000 clocks */
-#define AT91_MAIN_CLOCK                179712000       /* from 18.432 MHz crystal (18432000 / 4 * 39) */
-#define AT91_MASTER_CLOCK      59904000        /* peripheral clock (AT91C_MASTER_CLOCK / 3) */
-#define AT91_SLOW_CLOCK                32768           /* slow clock */
-
 /* Virtual and Physical base address for system peripherals */
 #define AT91_SYS_BASE          0xFFFFF000 /*4K */
 

diff --git a/include/configs/at91rm9200dk.h b/include/configs/at91rm9200dk.h
index 90cf8a2b4ae031338d48ef1245ccd0d14c24d37f..3949f9caa0553f4a1ffdc29f5b995cfe3a719900 100644 (file)
--- a/include/configs/at91rm9200dk.h
+++ b/include/configs/at91rm9200dk.h
@@ -36,6 +36,8 @@
 #define AT91C_MASTER_CLOCK  59904000  /* peripheral clock (AT91C_MASTER_CLOCK / 3) */
 /* #define AT91C_MASTER_CLOCK  44928000 */  /* peripheral clock (AT91C_MASTER_CLOCK / 4) */
 
+#define AT91_SLOW_CLOCK                32768   /* slow clock */
+
 #define CONFIG_AT91RM9200DK     1      /* on an AT91RM9200DK Board      */
 #undef CONFIG_USE_IRQ                  /* we don't need IRQ/FIQ stuff */
 #define CONFIG_CMDLINE_TAG      1      /* enable passing of ATAGs      */
@@ -50,6 +52,8 @@
 
 #define CONFIG_BAUDRATE 115200
 
+#define CFG_AT91C_BRGR_DIVISOR 33      /* hardcode so no __divsi3 : AT91C_MASTER_CLOCK / baudrate / 16 */
+
 /*
  * Hardware drivers
  */