Changeset 47bd0f8 in mainline

Timestamp:

2013-01-17T19:56:43Z (12 years ago)

Author:

Maurizio Lombardi <m.lombardi85@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

28a6190

Parents:

17cc8f4f

Message:

bbone initialization:

• initialize the DMTIMER0.
• the bbone_get_memory_extents() function should return the memory start address and size.
• dispatch exceptions to the appropriate interrupt handler.

File:

• kernel/arch/arm32/src/mach/beaglebone/beaglebone.c (modified) (4 diffs)

kernel/arch/arm32/src/mach/beaglebone/beaglebone.c

@@ -44 +44 @@
 #include <mm/km.h>
 
+#define BBONE_MEMORY_START       0x80000000      /* physical */
+#define BBONE_MEMORY_SIZE        0x10000000      /* 256 MB */
+
 static void bbone_init(void);
 static void bbone_timer_irq_start(void);
@@ -81 +84 @@
 
         am335x_irc_init(bbone.irc_addr);
+
+        /* Initialize the DMTIMER0 */
+        am335x_timer_init(&bbone.timer, DMTIMER0, HZ);
 }
 
@@ -127 +133 @@
 static void bbone_get_memory_extents(uintptr_t *start, size_t *size)
 {
+        *start = BBONE_MEMORY_START;
+        *size  = BBONE_MEMORY_SIZE;
 }
 
 static void bbone_irq_exception(unsigned int exc_no, istate_t *istate)
 {
+        const unsigned inum = am335x_irc_inum_get(bbone.irc_addr);
+        am335x_irc_irq_ack(bbone.irc_addr);
+
+        irq_t *irq = irq_dispatch_and_lock(inum);
+        if (irq) {
+                /* The IRQ handler was found. */
+                irq->handler(irq);
+                spinlock_unlock(&irq->lock);
+        } else {
+                printf("Spurious interrupt\n");
+        }
 }
 
@@ -143 +162 @@
             AM335x_UART0_SIZE);
 
-        if (ok)
+        if (ok) {
                 stdout_wire(&bbone.uart.outdev);
+                printf("UART Ok\n");
+        }
 }