2 * (C) Copyright 2000-2003
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * Copyright (C) 2004-2007, 2012 Freescale Semiconductor, Inc.
6 * Hayden Fraser (Hayden.Fraser@freescale.com)
8 * SPDX-License-Identifier: GPL-2.0+
12 #include <asm/immap.h>
15 DECLARE_GLOBAL_DATA_PTR;
20 puts("Freescale MCF5253 EVBE\n");
27 * Check to see if the SDRAM has already been initialized
28 * by a run control tool
30 if (!(mbar_readLong(MCFSIM_DCR) & 0x8000)) {
33 RC = (CONFIG_SYS_CLK / 1000000) >> 1;
36 /* Initialize DRAM Control Register: DCR */
37 mbar_writeShort(MCFSIM_DCR, (0x8400 | RC));
40 mbar_writeLong(MCFSIM_DACR0, 0x00002320);
44 dramsize = ((CONFIG_SYS_SDRAM_SIZE << 20) - 1) & 0xFFFC0000;
45 mbar_writeLong(MCFSIM_DMR0, dramsize | 1);
48 mbar_writeLong(MCFSIM_DACR0, 0x00002328);
51 /* Write to this block to initiate precharge */
52 *(u32 *) (CONFIG_SYS_SDRAM_BASE) = 0xa5a5a5a5;
55 /* Set RE bit in DACR */
56 mbar_writeLong(MCFSIM_DACR0,
57 mbar_readLong(MCFSIM_DACR0) | 0x8000);
60 /* Wait for at least 8 auto refresh cycles to occur */
63 /* Finish the configuration by issuing the MRS */
64 mbar_writeLong(MCFSIM_DACR0,
65 mbar_readLong(MCFSIM_DACR0) | 0x0040);
68 *(u32 *) (CONFIG_SYS_SDRAM_BASE + 0x800) = 0xa5a5a5a5;
71 gd->ram_size = CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
78 /* TODO: XXX XXX XXX */
79 printf("DRAM test not implemented!\n");
91 void ide_set_reset(int idereset)
93 atac_t *ata = (atac_t *) CONFIG_SYS_ATA_BASE_ADDR;
95 /* t1, t2, t3, t4, t5, t6, t9, tRD, tA */
96 int piotms[5][9] = { {70, 165, 60, 30, 50, 5, 20, 0, 35}, /* PIO 0 */
97 {50, 125, 45, 20, 35, 5, 15, 0, 35}, /* PIO 1 */
98 {30, 100, 30, 15, 20, 5, 10, 0, 35}, /* PIO 2 */
99 {30, 80, 30, 10, 20, 5, 10, 0, 35}, /* PIO 3 */
100 {25, 70, 20, 10, 20, 5, 10, 0, 35} /* PIO 4 */
108 mbar2_writeLong(CIM_MISCCR, CIM_MISCCR_CPUEND);
110 #define CALC_TIMING(t) (t + period - 1) / period
111 period = 1000000000 / (CONFIG_SYS_CLK / 2); /* period in ns */
113 /*ata->ton = CALC_TIMING (180); */
114 out_8(&ata->t1, CALC_TIMING(piotms[2][0]));
115 out_8(&ata->t2w, CALC_TIMING(piotms[2][1]));
116 out_8(&ata->t2r, CALC_TIMING(piotms[2][1]));
117 out_8(&ata->ta, CALC_TIMING(piotms[2][8]));
118 out_8(&ata->trd, CALC_TIMING(piotms[2][7]));
119 out_8(&ata->t4, CALC_TIMING(piotms[2][3]));
120 out_8(&ata->t9, CALC_TIMING(piotms[2][6]));
123 out_8(&ata->cr, 0x40);
126 setbits_8(&ata->cr, 0x01);
129 #endif /* CONFIG_CMD_IDE */