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 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 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