blob: b15219ed22bf5d61ab34392040826fc6823cab6e [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/***************************************************************************/
2
3/*
Greg Ungererece9ae62014-08-19 11:55:24 +10004 * m5272.c -- platform support for ColdFire 5272 based boards
Linus Torvalds1da177e2005-04-16 15:20:36 -07005 *
6 * Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com)
7 * Copyright (C) 2001-2002, SnapGear Inc. (www.snapgear.com)
8 */
9
10/***************************************************************************/
11
Linus Torvalds1da177e2005-04-16 15:20:36 -070012#include <linux/kernel.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070013#include <linux/param.h>
14#include <linux/init.h>
Greg Ungerer84e6def2008-02-01 17:34:32 +100015#include <linux/io.h>
Greg Ungerer41a21592010-10-12 12:24:49 +100016#include <linux/phy.h>
17#include <linux/phy_fixed.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070018#include <asm/machdep.h>
19#include <asm/coldfire.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070020#include <asm/mcfsim.h>
Greg Ungerer84e6def2008-02-01 17:34:32 +100021#include <asm/mcfuart.h>
Greg Ungerer7acef7a2012-07-13 16:01:59 +100022#include <asm/mcfclk.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070023
24/***************************************************************************/
25
Linus Torvalds1da177e2005-04-16 15:20:36 -070026/*
27 * Some platforms need software versions of the GPIO data registers.
28 */
29unsigned short ppdata;
30unsigned char ledbank = 0xff;
31
32/***************************************************************************/
33
Greg Ungerer7acef7a2012-07-13 16:01:59 +100034DEFINE_CLK(pll, "pll.0", MCF_CLK);
35DEFINE_CLK(sys, "sys.0", MCF_BUSCLK);
36DEFINE_CLK(mcftmr0, "mcftmr.0", MCF_BUSCLK);
37DEFINE_CLK(mcftmr1, "mcftmr.1", MCF_BUSCLK);
38DEFINE_CLK(mcftmr2, "mcftmr.2", MCF_BUSCLK);
39DEFINE_CLK(mcftmr3, "mcftmr.3", MCF_BUSCLK);
40DEFINE_CLK(mcfuart0, "mcfuart.0", MCF_BUSCLK);
41DEFINE_CLK(mcfuart1, "mcfuart.1", MCF_BUSCLK);
Steven King74859522014-05-14 10:06:29 -070042DEFINE_CLK(mcfqspi0, "mcfqspi.0", MCF_BUSCLK);
Greg Ungerer7acef7a2012-07-13 16:01:59 +100043DEFINE_CLK(fec0, "fec.0", MCF_BUSCLK);
44
45struct clk *mcf_clks[] = {
46 &clk_pll,
47 &clk_sys,
48 &clk_mcftmr0,
49 &clk_mcftmr1,
50 &clk_mcftmr2,
51 &clk_mcftmr3,
52 &clk_mcfuart0,
53 &clk_mcfuart1,
Steven King74859522014-05-14 10:06:29 -070054 &clk_mcfqspi0,
Greg Ungerer7acef7a2012-07-13 16:01:59 +100055 &clk_fec0,
56 NULL
57};
58
59/***************************************************************************/
60
Greg Ungerer6b656e82011-12-24 00:56:52 +100061static void __init m5272_uarts_init(void)
Greg Ungerer84e6def2008-02-01 17:34:32 +100062{
63 u32 v;
64
Greg Ungerer6b656e82011-12-24 00:56:52 +100065 /* Enable the output lines for the serial ports */
Greg Ungerer4fb62ed2012-09-14 16:36:08 +100066 v = readl(MCFSIM_PBCNT);
Greg Ungerer6b656e82011-12-24 00:56:52 +100067 v = (v & ~0x000000ff) | 0x00000055;
Greg Ungerer4fb62ed2012-09-14 16:36:08 +100068 writel(v, MCFSIM_PBCNT);
Greg Ungerer84e6def2008-02-01 17:34:32 +100069
Greg Ungerer4fb62ed2012-09-14 16:36:08 +100070 v = readl(MCFSIM_PDCNT);
Greg Ungerer6b656e82011-12-24 00:56:52 +100071 v = (v & ~0x000003fc) | 0x000002a8;
Greg Ungerer4fb62ed2012-09-14 16:36:08 +100072 writel(v, MCFSIM_PDCNT);
Greg Ungerer84e6def2008-02-01 17:34:32 +100073}
Linus Torvalds1da177e2005-04-16 15:20:36 -070074
75/***************************************************************************/
76
Greg Ungerer05728ae2009-04-30 23:32:52 +100077static void m5272_cpu_reset(void)
78{
79 local_irq_disable();
80 /* Set watchdog to reset, and enabled */
Greg Ungerer660b73e2012-07-15 22:01:08 +100081 __raw_writew(0, MCFSIM_WIRR);
82 __raw_writew(1, MCFSIM_WRRR);
83 __raw_writew(0, MCFSIM_WCR);
Greg Ungerer05728ae2009-04-30 23:32:52 +100084 for (;;)
85 /* wait for watchdog to timeout */;
86}
87
88/***************************************************************************/
89
Greg Ungerer84e6def2008-02-01 17:34:32 +100090void __init config_BSP(char *commandp, int size)
Linus Torvalds1da177e2005-04-16 15:20:36 -070091{
Greg Ungerera7962662005-09-09 09:32:14 +100092#if defined (CONFIG_MOD5272)
Linus Torvalds1da177e2005-04-16 15:20:36 -070093 /* Set base of device vectors to be 64 */
Greg Ungererd72a5ab2012-09-14 16:25:12 +100094 writeb(0x40, MCFSIM_PIVR);
Linus Torvalds1da177e2005-04-16 15:20:36 -070095#endif
96
Greg Ungererbc724502007-07-25 22:07:20 +100097#if defined(CONFIG_NETtel) || defined(CONFIG_SCALES)
Linus Torvalds1da177e2005-04-16 15:20:36 -070098 /* Copy command line from FLASH to local buffer... */
99 memcpy(commandp, (char *) 0xf0004000, size);
100 commandp[size-1] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101#elif defined(CONFIG_CANCam)
102 /* Copy command line from FLASH to local buffer... */
103 memcpy(commandp, (char *) 0xf0010000, size);
104 commandp[size-1] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105#endif
106
Greg Ungerer05728ae2009-04-30 23:32:52 +1000107 mach_reset = m5272_cpu_reset;
Greg Ungerer35aefb22012-01-23 15:34:58 +1000108 mach_sched_init = hw_timer_init;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109}
110
111/***************************************************************************/
Greg Ungerer84e6def2008-02-01 17:34:32 +1000112
Greg Ungerer41a21592010-10-12 12:24:49 +1000113/*
114 * Some 5272 based boards have the FEC ethernet diectly connected to
115 * an ethernet switch. In this case we need to use the fixed phy type,
116 * and we need to declare it early in boot.
117 */
118static struct fixed_phy_status nettel_fixed_phy_status __initdata = {
119 .link = 1,
120 .speed = 100,
121 .duplex = 0,
122};
123
124/***************************************************************************/
125
Greg Ungerer84e6def2008-02-01 17:34:32 +1000126static int __init init_BSP(void)
127{
128 m5272_uarts_init();
Greg Ungerer41a21592010-10-12 12:24:49 +1000129 fixed_phy_add(PHY_POLL, 0, &nettel_fixed_phy_status);
Greg Ungerer84e6def2008-02-01 17:34:32 +1000130 return 0;
131}
132
133arch_initcall(init_BSP);
134
135/***************************************************************************/