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authorGreg Ungerer <gerg@snapgear.com>2008-02-01 02:34:15 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2008-02-01 04:54:03 -0500
commit4b61a353e4c893ea07ff5a812de8c0894ed5982f (patch)
tree9331a9ac544b8cd42c9b03ad5ed0b7d500e24430 /arch
parentcf64c233839e97221d63ed7887b59196c8c748c3 (diff)
m68knommu: platform setup for 523x ColdFire parts
Switch to platform style configuration for 523x ColdFire parts. Initial support is for the UARTs. DMA support moved to common code for all ColdFire parts. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/m68knommu/platform/523x/config.c75
1 files changed, 65 insertions, 10 deletions
diff --git a/arch/m68knommu/platform/523x/config.c b/arch/m68knommu/platform/523x/config.c
index e7f80c8e8636..13f02611ea23 100644
--- a/arch/m68knommu/platform/523x/config.c
+++ b/arch/m68knommu/platform/523x/config.c
@@ -16,11 +16,11 @@
16#include <linux/param.h> 16#include <linux/param.h>
17#include <linux/init.h> 17#include <linux/init.h>
18#include <linux/interrupt.h> 18#include <linux/interrupt.h>
19#include <asm/dma.h> 19#include <linux/io.h>
20#include <asm/machdep.h> 20#include <asm/machdep.h>
21#include <asm/coldfire.h> 21#include <asm/coldfire.h>
22#include <asm/mcfsim.h> 22#include <asm/mcfsim.h>
23#include <asm/mcfdma.h> 23#include <asm/mcfuart.h>
24 24
25/***************************************************************************/ 25/***************************************************************************/
26 26
@@ -28,14 +28,58 @@ void coldfire_reset(void);
28 28
29/***************************************************************************/ 29/***************************************************************************/
30 30
31/* 31static struct mcf_platform_uart m523x_uart_platform[] = {
32 * DMA channel base address table. 32 {
33 */ 33 .mapbase = MCF_MBAR + MCFUART_BASE1,
34unsigned int dma_base_addr[MAX_M68K_DMA_CHANNELS] = { 34 .irq = MCFINT_VECBASE + MCFINT_UART0,
35 MCF_MBAR + MCFDMA_BASE0, 35 },
36 {
37 .mapbase = MCF_MBAR + MCFUART_BASE2,
38 .irq = MCFINT_VECBASE + MCFINT_UART0 + 1,
39 },
40 {
41 .mapbase = MCF_MBAR + MCFUART_BASE3,
42 .irq = MCFINT_VECBASE + MCFINT_UART0 + 2,
43 },
44 { },
45};
46
47static struct platform_device m523x_uart = {
48 .name = "mcfuart",
49 .id = 0,
50 .dev.platform_data = m523x_uart_platform,
51};
52
53static struct platform_device *m523x_devices[] __initdata = {
54 &m523x_uart,
36}; 55};
37 56
38unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS]; 57/***************************************************************************/
58
59#define INTC0 (MCF_MBAR + MCFICM_INTC0)
60
61static void __init m523x_uart_init_line(int line, int irq)
62{
63 u32 imr;
64
65 if ((line < 0) || (line > 2))
66 return;
67
68 writeb(0x30+line, (INTC0 + MCFINTC_ICR0 + MCFINT_UART0 + line));
69
70 imr = readl(INTC0 + MCFINTC_IMRL);
71 imr &= ~((1 << (irq - MCFINT_VECBASE)) | 1);
72 writel(imr, INTC0 + MCFINTC_IMRL);
73}
74
75static void __init m523x_uarts_init(void)
76{
77 const int nrlines = ARRAY_SIZE(m523x_uart_platform);
78 int line;
79
80 for (line = 0; (line < nrlines); line++)
81 m523x_uart_init_line(line, m523x_uart_platform[line].irq);
82}
39 83
40/***************************************************************************/ 84/***************************************************************************/
41 85
@@ -49,15 +93,26 @@ void mcf_disableall(void)
49 93
50void mcf_autovector(unsigned int vec) 94void mcf_autovector(unsigned int vec)
51{ 95{
52 /* Everything is auto-vectored on the 5272 */ 96 /* Everything is auto-vectored on the 523x */
53} 97}
54 98
55/***************************************************************************/ 99/***************************************************************************/
56 100
57void config_BSP(char *commandp, int size) 101void __init config_BSP(char *commandp, int size)
58{ 102{
59 mcf_disableall(); 103 mcf_disableall();
60 mach_reset = coldfire_reset; 104 mach_reset = coldfire_reset;
105 m523x_uarts_init();
61} 106}
62 107
63/***************************************************************************/ 108/***************************************************************************/
109
110static int __init init_BSP(void)
111{
112 platform_add_devices(m523x_devices, ARRAY_SIZE(m523x_devices));
113 return 0;
114}
115
116arch_initcall(init_BSP);
117
118/***************************************************************************/