1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2000-2003
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
6 * Copyright (C) 2004-2007, 2012 Freescale Semiconductor, Inc.
7 * Hayden Fraser (Hayden.Fraser@freescale.com)
13 #include <asm/immap.h>
16 #include <linux/delay.h>
18 DECLARE_GLOBAL_DATA_PTR;
23 puts("Freescale MCF5253 DEMO\n");
32 * Check to see if the SDRAM has already been initialized
33 * by a run control tool
35 if (!(mbar_readLong(MCFSIM_DCR) & 0x8000)) {
38 RC = (CONFIG_SYS_CLK / 1000000) >> 1;
41 /* Initialize DRAM Control Register: DCR */
42 mbar_writeShort(MCFSIM_DCR, (0x8400 | RC));
45 mbar_writeLong(MCFSIM_DACR0, 0x00003224);
49 dramsize = (CONFIG_SYS_SDRAM_SIZE << 20);
50 temp = (dramsize - 1) & 0xFFFC0000;
51 mbar_writeLong(MCFSIM_DMR0, temp | 1);
54 mbar_writeLong(MCFSIM_DACR0, 0x0000322c);
58 /* Write to this block to initiate precharge */
59 *(u32 *) (CONFIG_SYS_SDRAM_BASE) = 0xa5a5a5a5;
63 /* Set RE bit in DACR */
64 mbar_writeLong(MCFSIM_DACR0,
65 mbar_readLong(MCFSIM_DACR0) | 0x8000);
68 /* Wait for at least 8 auto refresh cycles to occur */
71 /* Finish the configuration by issuing the MRS */
72 mbar_writeLong(MCFSIM_DACR0,
73 mbar_readLong(MCFSIM_DACR0) | 0x0040);
76 *(u32 *) (CONFIG_SYS_SDRAM_BASE + 0x800) = 0xa5a5a5a5;
80 gd->ram_size = dramsize;
87 /* TODO: XXX XXX XXX */
88 printf("DRAM test not implemented!\n");
100 void ide_set_reset(int idereset)
102 atac_t *ata = (atac_t *) CONFIG_SYS_ATA_BASE_ADDR;
104 /* t1, t2, t3, t4, t5, t6, t9, tRD, tA */
105 int piotms[5][9] = { {70, 165, 60, 30, 50, 5, 20, 0, 35}, /* PIO 0 */
106 {50, 125, 45, 20, 35, 5, 15, 0, 35}, /* PIO 1 */
107 {30, 100, 30, 15, 20, 5, 10, 0, 35}, /* PIO 2 */
108 {30, 80, 30, 10, 20, 5, 10, 0, 35}, /* PIO 3 */
109 {25, 70, 20, 10, 20, 5, 10, 0, 35} /* PIO 4 */
117 mbar2_writeLong(CIM_MISCCR, CIM_MISCCR_CPUEND);
119 #define CALC_TIMING(t) (t + period - 1) / period
120 period = 1000000000 / (CONFIG_SYS_CLK / 2); /* period in ns */
122 /*ata->ton = CALC_TIMING (180); */
123 out_8(&ata->t1, CALC_TIMING(piotms[2][0]));
124 out_8(&ata->t2w, CALC_TIMING(piotms[2][1]));
125 out_8(&ata->t2r, CALC_TIMING(piotms[2][1]));
126 out_8(&ata->ta, CALC_TIMING(piotms[2][8]));
127 out_8(&ata->trd, CALC_TIMING(piotms[2][7]));
128 out_8(&ata->t4, CALC_TIMING(piotms[2][3]));
129 out_8(&ata->t9, CALC_TIMING(piotms[2][6]));
132 out_8(&ata->cr, 0x40);
135 setbits_8(&ata->cr, 0x01);
138 #endif /* CONFIG_IDE */
141 #ifdef CONFIG_DRIVER_DM9000
142 int board_eth_init(bd_t *bis)
144 return dm9000_initialize(bis);