Linux Kernel  3.7.1
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m5272.c
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1 /***************************************************************************/
2 
3 /*
4  * linux/arch/m68knommu/platform/5272/config.c
5  *
6  * Copyright (C) 1999-2002, Greg Ungerer ([email protected])
7  * Copyright (C) 2001-2002, SnapGear Inc. (www.snapgear.com)
8  */
9 
10 /***************************************************************************/
11 
12 #include <linux/kernel.h>
13 #include <linux/param.h>
14 #include <linux/init.h>
15 #include <linux/io.h>
16 #include <linux/phy.h>
17 #include <linux/phy_fixed.h>
18 #include <asm/machdep.h>
19 #include <asm/coldfire.h>
20 #include <asm/mcfsim.h>
21 #include <asm/mcfuart.h>
22 
23 /***************************************************************************/
24 
25 /*
26  * Some platforms need software versions of the GPIO data registers.
27  */
28 unsigned short ppdata;
29 unsigned char ledbank = 0xff;
30 
31 /***************************************************************************/
32 
33 static void __init m5272_uarts_init(void)
34 {
35  u32 v;
36 
37  /* Enable the output lines for the serial ports */
38  v = readl(MCFSIM_PBCNT);
39  v = (v & ~0x000000ff) | 0x00000055;
40  writel(v, MCFSIM_PBCNT);
41 
42  v = readl(MCFSIM_PDCNT);
43  v = (v & ~0x000003fc) | 0x000002a8;
44  writel(v, MCFSIM_PDCNT);
45 }
46 
47 /***************************************************************************/
48 
49 static void m5272_cpu_reset(void)
50 {
51  local_irq_disable();
52  /* Set watchdog to reset, and enabled */
53  __raw_writew(0, MCFSIM_WIRR);
54  __raw_writew(1, MCFSIM_WRRR);
55  __raw_writew(0, MCFSIM_WCR);
56  for (;;)
57  /* wait for watchdog to timeout */;
58 }
59 
60 /***************************************************************************/
61 
62 void __init config_BSP(char *commandp, int size)
63 {
64 #if defined (CONFIG_MOD5272)
65  /* Set base of device vectors to be 64 */
66  writeb(0x40, MCFSIM_PIVR);
67 #endif
68 
69 #if defined(CONFIG_NETtel) || defined(CONFIG_SCALES)
70  /* Copy command line from FLASH to local buffer... */
71  memcpy(commandp, (char *) 0xf0004000, size);
72  commandp[size-1] = 0;
73 #elif defined(CONFIG_CANCam)
74  /* Copy command line from FLASH to local buffer... */
75  memcpy(commandp, (char *) 0xf0010000, size);
76  commandp[size-1] = 0;
77 #endif
78 
79  mach_reset = m5272_cpu_reset;
80  mach_sched_init = hw_timer_init;
81 }
82 
83 /***************************************************************************/
84 
85 /*
86  * Some 5272 based boards have the FEC ethernet diectly connected to
87  * an ethernet switch. In this case we need to use the fixed phy type,
88  * and we need to declare it early in boot.
89  */
90 static struct fixed_phy_status nettel_fixed_phy_status __initdata = {
91  .link = 1,
92  .speed = 100,
93  .duplex = 0,
94 };
95 
96 /***************************************************************************/
97 
98 static int __init init_BSP(void)
99 {
100  m5272_uarts_init();
101  fixed_phy_add(PHY_POLL, 0, &nettel_fixed_phy_status);
102  return 0;
103 }
104 
105 arch_initcall(init_BSP);
106 
107 /***************************************************************************/
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