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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/v850/kernel/ma.c
downloadlinux-dev-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz
linux-dev-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/v850/kernel/ma.c')
-rw-r--r--arch/v850/kernel/ma.c70
1 files changed, 70 insertions, 0 deletions
diff --git a/arch/v850/kernel/ma.c b/arch/v850/kernel/ma.c
new file mode 100644
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+++ b/arch/v850/kernel/ma.c
@@ -0,0 +1,70 @@
+/*
+ * arch/v850/kernel/ma.c -- V850E/MA series of cpu chips
+ *
+ * Copyright (C) 2001,02,03 NEC Electronics Corporation
+ * Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/swap.h>
+#include <linux/bootmem.h>
+#include <linux/irq.h>
+
+#include <asm/atomic.h>
+#include <asm/page.h>
+#include <asm/machdep.h>
+#include <asm/v850e_timer_d.h>
+
+#include "mach.h"
+
+void __init mach_sched_init (struct irqaction *timer_action)
+{
+ /* Start hardware timer. */
+ v850e_timer_d_configure (0, HZ);
+ /* Install timer interrupt handler. */
+ setup_irq (IRQ_INTCMD(0), timer_action);
+}
+
+static struct v850e_intc_irq_init irq_inits[] = {
+ { "IRQ", 0, NUM_MACH_IRQS, 1, 7 },
+ { "CMD", IRQ_INTCMD(0), IRQ_INTCMD_NUM, 1, 5 },
+ { "DMA", IRQ_INTDMA(0), IRQ_INTDMA_NUM, 1, 2 },
+ { "CSI", IRQ_INTCSI(0), IRQ_INTCSI_NUM, 4, 4 },
+ { "SER", IRQ_INTSER(0), IRQ_INTSER_NUM, 4, 3 },
+ { "SR", IRQ_INTSR(0), IRQ_INTSR_NUM, 4, 4 },
+ { "ST", IRQ_INTST(0), IRQ_INTST_NUM, 4, 5 },
+ { 0 }
+};
+#define NUM_IRQ_INITS ((sizeof irq_inits / sizeof irq_inits[0]) - 1)
+
+static struct hw_interrupt_type hw_itypes[NUM_IRQ_INITS];
+
+/* Initialize MA chip interrupts. */
+void __init ma_init_irqs (void)
+{
+ v850e_intc_init_irq_types (irq_inits, hw_itypes);
+}
+
+/* Called before configuring an on-chip UART. */
+void ma_uart_pre_configure (unsigned chan, unsigned cflags, unsigned baud)
+{
+ /* We only know about the first two UART channels (though
+ specific chips may have more). */
+ if (chan < 2) {
+ unsigned bits = 0x3 << (chan * 3);
+ /* Specify that the relevant pins on the chip should do
+ serial I/O, not direct I/O. */
+ MA_PORT4_PMC |= bits;
+ /* Specify that we're using the UART, not the CSI device. */
+ MA_PORT4_PFC |= bits;
+ }
+}