1 // SPDX-License-Identifier: GPL-2.0 <<
2 /********************************************* 1 /***************************************************************************/
3 2
4 /* 3 /*
5 * m5272.c -- platform support for ColdF 4 * m5272.c -- platform support for ColdFire 5272 based boards
6 * 5 *
7 * Copyright (C) 1999-2002, Greg Ungerer 6 * Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com)
8 * Copyright (C) 2001-2002, SnapGear Inc. 7 * Copyright (C) 2001-2002, SnapGear Inc. (www.snapgear.com)
9 */ 8 */
10 9
11 /********************************************* 10 /***************************************************************************/
12 11
13 #include <linux/clkdev.h> <<
14 #include <linux/kernel.h> 12 #include <linux/kernel.h>
15 #include <linux/param.h> 13 #include <linux/param.h>
16 #include <linux/init.h> 14 #include <linux/init.h>
17 #include <linux/io.h> 15 #include <linux/io.h>
18 #include <linux/phy.h> 16 #include <linux/phy.h>
19 #include <linux/phy_fixed.h> 17 #include <linux/phy_fixed.h>
20 #include <asm/machdep.h> 18 #include <asm/machdep.h>
21 #include <asm/coldfire.h> 19 #include <asm/coldfire.h>
22 #include <asm/mcfsim.h> 20 #include <asm/mcfsim.h>
23 #include <asm/mcfuart.h> 21 #include <asm/mcfuart.h>
24 #include <asm/mcfclk.h> 22 #include <asm/mcfclk.h>
25 23
26 /********************************************* 24 /***************************************************************************/
27 25
28 /* 26 /*
29 * Some platforms need software versions 27 * Some platforms need software versions of the GPIO data registers.
30 */ 28 */
31 unsigned short ppdata; 29 unsigned short ppdata;
32 unsigned char ledbank = 0xff; 30 unsigned char ledbank = 0xff;
33 31
34 /********************************************* 32 /***************************************************************************/
35 33
36 DEFINE_CLK(pll, "pll.0", MCF_CLK); 34 DEFINE_CLK(pll, "pll.0", MCF_CLK);
37 DEFINE_CLK(sys, "sys.0", MCF_BUSCLK); 35 DEFINE_CLK(sys, "sys.0", MCF_BUSCLK);
38 !! 36 DEFINE_CLK(mcftmr0, "mcftmr.0", MCF_BUSCLK);
39 static struct clk_lookup m5272_clk_lookup[] = !! 37 DEFINE_CLK(mcftmr1, "mcftmr.1", MCF_BUSCLK);
40 CLKDEV_INIT(NULL, "pll.0", &clk_pll), !! 38 DEFINE_CLK(mcftmr2, "mcftmr.2", MCF_BUSCLK);
41 CLKDEV_INIT(NULL, "sys.0", &clk_sys), !! 39 DEFINE_CLK(mcftmr3, "mcftmr.3", MCF_BUSCLK);
42 CLKDEV_INIT("mcftmr.0", NULL, &clk_sys !! 40 DEFINE_CLK(mcfuart0, "mcfuart.0", MCF_BUSCLK);
43 CLKDEV_INIT("mcftmr.1", NULL, &clk_sys !! 41 DEFINE_CLK(mcfuart1, "mcfuart.1", MCF_BUSCLK);
44 CLKDEV_INIT("mcftmr.2", NULL, &clk_sys !! 42 DEFINE_CLK(mcfqspi0, "mcfqspi.0", MCF_BUSCLK);
45 CLKDEV_INIT("mcftmr.3", NULL, &clk_sys !! 43 DEFINE_CLK(fec0, "fec.0", MCF_BUSCLK);
46 CLKDEV_INIT("mcfuart.0", NULL, &clk_sy !! 44
47 CLKDEV_INIT("mcfuart.1", NULL, &clk_sy !! 45 struct clk *mcf_clks[] = {
48 CLKDEV_INIT("mcfqspi.0", NULL, &clk_sy !! 46 &clk_pll,
49 CLKDEV_INIT("fec.0", NULL, &clk_sys), !! 47 &clk_sys,
>> 48 &clk_mcftmr0,
>> 49 &clk_mcftmr1,
>> 50 &clk_mcftmr2,
>> 51 &clk_mcftmr3,
>> 52 &clk_mcfuart0,
>> 53 &clk_mcfuart1,
>> 54 &clk_mcfqspi0,
>> 55 &clk_fec0,
>> 56 NULL
50 }; 57 };
51 58
52 /********************************************* 59 /***************************************************************************/
53 60
54 static void __init m5272_uarts_init(void) 61 static void __init m5272_uarts_init(void)
55 { 62 {
56 u32 v; 63 u32 v;
57 64
58 /* Enable the output lines for the ser 65 /* Enable the output lines for the serial ports */
59 v = readl(MCFSIM_PBCNT); 66 v = readl(MCFSIM_PBCNT);
60 v = (v & ~0x000000ff) | 0x00000055; 67 v = (v & ~0x000000ff) | 0x00000055;
61 writel(v, MCFSIM_PBCNT); 68 writel(v, MCFSIM_PBCNT);
62 69
63 v = readl(MCFSIM_PDCNT); 70 v = readl(MCFSIM_PDCNT);
64 v = (v & ~0x000003fc) | 0x000002a8; 71 v = (v & ~0x000003fc) | 0x000002a8;
65 writel(v, MCFSIM_PDCNT); 72 writel(v, MCFSIM_PDCNT);
66 } 73 }
67 74
68 /********************************************* 75 /***************************************************************************/
69 76
70 static void m5272_cpu_reset(void) 77 static void m5272_cpu_reset(void)
71 { 78 {
72 local_irq_disable(); 79 local_irq_disable();
73 /* Set watchdog to reset, and enabled 80 /* Set watchdog to reset, and enabled */
74 __raw_writew(0, MCFSIM_WIRR); 81 __raw_writew(0, MCFSIM_WIRR);
75 __raw_writew(1, MCFSIM_WRRR); 82 __raw_writew(1, MCFSIM_WRRR);
76 __raw_writew(0, MCFSIM_WCR); 83 __raw_writew(0, MCFSIM_WCR);
77 for (;;) 84 for (;;)
78 /* wait for watchdog to timeou 85 /* wait for watchdog to timeout */;
79 } 86 }
80 87
81 /********************************************* 88 /***************************************************************************/
82 89
83 void __init config_BSP(char *commandp, int siz 90 void __init config_BSP(char *commandp, int size)
84 { 91 {
85 #if defined (CONFIG_MOD5272) 92 #if defined (CONFIG_MOD5272)
86 /* Set base of device vectors to be 64 93 /* Set base of device vectors to be 64 */
87 writeb(0x40, MCFSIM_PIVR); 94 writeb(0x40, MCFSIM_PIVR);
88 #endif 95 #endif
89 96
90 #if defined(CONFIG_NETtel) || defined(CONFIG_S 97 #if defined(CONFIG_NETtel) || defined(CONFIG_SCALES)
91 /* Copy command line from FLASH to loc 98 /* Copy command line from FLASH to local buffer... */
92 memcpy(commandp, (char *) 0xf0004000, 99 memcpy(commandp, (char *) 0xf0004000, size);
93 commandp[size-1] = 0; 100 commandp[size-1] = 0;
94 #elif defined(CONFIG_CANCam) 101 #elif defined(CONFIG_CANCam)
95 /* Copy command line from FLASH to loc 102 /* Copy command line from FLASH to local buffer... */
96 memcpy(commandp, (char *) 0xf0010000, 103 memcpy(commandp, (char *) 0xf0010000, size);
97 commandp[size-1] = 0; 104 commandp[size-1] = 0;
98 #endif 105 #endif
99 106
100 mach_reset = m5272_cpu_reset; 107 mach_reset = m5272_cpu_reset;
101 mach_sched_init = hw_timer_init; 108 mach_sched_init = hw_timer_init;
102 } 109 }
103 110
104 /********************************************* 111 /***************************************************************************/
105 112
106 /* 113 /*
107 * Some 5272 based boards have the FEC etherne 114 * Some 5272 based boards have the FEC ethernet directly connected to
108 * an ethernet switch. In this case we need to 115 * an ethernet switch. In this case we need to use the fixed phy type,
109 * and we need to declare it early in boot. 116 * and we need to declare it early in boot.
110 */ 117 */
111 static struct fixed_phy_status nettel_fixed_ph 118 static struct fixed_phy_status nettel_fixed_phy_status __initdata = {
112 .link = 1, 119 .link = 1,
113 .speed = 100, 120 .speed = 100,
114 .duplex = 0, 121 .duplex = 0,
115 }; 122 };
116 123
117 /********************************************* 124 /***************************************************************************/
118 125
119 static int __init init_BSP(void) 126 static int __init init_BSP(void)
120 { 127 {
121 m5272_uarts_init(); 128 m5272_uarts_init();
122 fixed_phy_add(PHY_POLL, 0, &nettel_fix !! 129 fixed_phy_add(PHY_POLL, 0, &nettel_fixed_phy_status, -1);
123 clkdev_add_table(m5272_clk_lookup, ARR <<
124 return 0; 130 return 0;
125 } 131 }
126 132
127 arch_initcall(init_BSP); 133 arch_initcall(init_BSP);
128 134
129 /********************************************* 135 /***************************************************************************/
130 136
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