1 // SPDX-License-Identifier: GPL-2.0
2 /***************************************************************************/
3 
4 /*
5  *	m5307.c  -- platform support for ColdFire 5307 based boards
6  *
7  *	Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com)
8  *	Copyright (C) 2000, Lineo (www.lineo.com)
9  */
10 
11 /***************************************************************************/
12 
13 #include <linux/clkdev.h>
14 #include <linux/kernel.h>
15 #include <linux/param.h>
16 #include <linux/init.h>
17 #include <linux/io.h>
18 #include <asm/machdep.h>
19 #include <asm/coldfire.h>
20 #include <asm/mcfsim.h>
21 #include <asm/mcfwdebug.h>
22 #include <asm/mcfclk.h>
23 
24 /***************************************************************************/
25 
26 /*
27  *	Some platforms need software versions of the GPIO data registers.
28  */
29 unsigned short ppdata;
30 unsigned char ledbank = 0xff;
31 
32 /***************************************************************************/
33 
34 DEFINE_CLK(pll, "pll.0", MCF_CLK);
35 DEFINE_CLK(sys, "sys.0", MCF_BUSCLK);
36 
37 static struct clk_lookup m5307_clk_lookup[] = {
38 	CLKDEV_INIT(NULL, "pll.0", &clk_pll),
39 	CLKDEV_INIT(NULL, "sys.0", &clk_sys),
40 	CLKDEV_INIT("mcftmr.0", NULL, &clk_sys),
41 	CLKDEV_INIT("mcftmr.1", NULL, &clk_sys),
42 	CLKDEV_INIT("mcfuart.0", NULL, &clk_sys),
43 	CLKDEV_INIT("mcfuart.1", NULL, &clk_sys),
44 	CLKDEV_INIT("imx1-i2c.0", NULL, &clk_sys),
45 };
46 
47 /***************************************************************************/
48 
m5307_i2c_init(void)49 static void __init m5307_i2c_init(void)
50 {
51 #if IS_ENABLED(CONFIG_I2C_IMX)
52 	writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL5 | MCFSIM_ICR_PRI0,
53 	       MCFSIM_I2CICR);
54 	mcf_mapirq2imr(MCF_IRQ_I2C0, MCFINTC_I2C);
55 #endif /* IS_ENABLED(CONFIG_I2C_IMX) */
56 }
57 
58 /***************************************************************************/
59 
config_BSP(char * commandp,int size)60 void __init config_BSP(char *commandp, int size)
61 {
62 #if defined(CONFIG_NETtel) || \
63     defined(CONFIG_SECUREEDGEMP3) || defined(CONFIG_CLEOPATRA)
64 	/* Copy command line from FLASH to local buffer... */
65 	memcpy(commandp, (char *) 0xf0004000, size);
66 	commandp[size-1] = 0;
67 #endif
68 
69 	mach_sched_init = hw_timer_init;
70 
71 	/* Only support the external interrupts on their primary level */
72 	mcf_mapirq2imr(25, MCFINTC_EINT1);
73 	mcf_mapirq2imr(27, MCFINTC_EINT3);
74 	mcf_mapirq2imr(29, MCFINTC_EINT5);
75 	mcf_mapirq2imr(31, MCFINTC_EINT7);
76 
77 #ifdef CONFIG_BDM_DISABLE
78 	/*
79 	 * Disable the BDM clocking.  This also turns off most of the rest of
80 	 * the BDM device.  This is good for EMC reasons. This option is not
81 	 * incompatible with the memory protection option.
82 	 */
83 	wdebug(MCFDEBUG_CSR, MCFDEBUG_CSR_PSTCLK);
84 #endif
85 	m5307_i2c_init();
86 
87 	clkdev_add_table(m5307_clk_lookup, ARRAY_SIZE(m5307_clk_lookup));
88 }
89 
90 /***************************************************************************/
91