2 * (C) Copyright 2007 DENX Software Engineering
4 * See file CREDITS for list of people who contributed to this
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
26 #include <asm/bitops.h>
28 #include <fdt_support.h>
31 #define SCCR1_CLOCKS_EN (CLOCK_SCCR1_CFG_EN | \
32 CLOCK_SCCR1_LPC_EN | \
33 CLOCK_SCCR1_PSC_EN(CONFIG_PSC_CONSOLE) | \
34 CLOCK_SCCR1_PSCFIFO_EN | \
35 CLOCK_SCCR1_DDR_EN | \
36 CLOCK_SCCR1_FEC_EN | \
37 CLOCK_SCCR1_PCI_EN | \
40 #define SCCR2_CLOCKS_EN (CLOCK_SCCR2_MEM_EN | \
41 CLOCK_SCCR2_SPDIF_EN | \
44 #define CSAW_START(start) ((start) & 0xFFFF0000)
45 #define CSAW_STOP(start, size) (((start) + (size) - 1) >> 16)
47 long int fixed_sdram(void);
49 int board_early_init_f (void)
51 volatile immap_t *im = (immap_t *) CFG_IMMR;
55 * Initialize Local Window for the CPLD registers access (CS2 selects
58 im->sysconf.lpcs2aw = CSAW_START(CFG_CPLD_BASE) |
59 CSAW_STOP(CFG_CPLD_BASE, CFG_CPLD_SIZE);
60 im->lpc.cs_cfg[2] = CFG_CS2_CFG;
63 * According to MPC5121e RM, configuring local access windows should
64 * be followed by a dummy read of the config register that was
65 * modified last and an isync
67 lpcaw = im->sysconf.lpcs2aw;
68 __asm__ __volatile__ ("isync");
71 * Disable Boot NOR FLASH write protect - CPLD Reg 8 NOR FLASH Control
73 * Without this the flash identification routine fails, as it needs to issue
74 * write commands in order to establish the device ID.
76 *((volatile u8 *)(CFG_CPLD_BASE + 0x08)) = 0xC1;
81 im->clk.sccr[0] = SCCR1_CLOCKS_EN;
82 im->clk.sccr[1] = SCCR2_CLOCKS_EN;
87 long int initdram (int board_type)
91 msize = fixed_sdram ();
97 * fixed sdram init -- the board doesn't use memory modules that have serial presence
98 * detect or similar mechanism for discovery of the DRAM settings
100 long int fixed_sdram (void)
102 volatile immap_t *im = (immap_t *) CFG_IMMR;
103 u32 msize = CFG_DDR_SIZE * 1024 * 1024;
104 u32 msize_log2 = __ilog2 (msize);
107 /* Initialize IO Control */
108 im->io_ctrl.regs[MEM_IDX] = IOCTRL_MUX_DDR;
110 /* Initialize DDR Local Window */
111 im->sysconf.ddrlaw.bar = CFG_DDR_BASE & 0xFFFFF000;
112 im->sysconf.ddrlaw.ar = msize_log2 - 1;
115 * According to MPC5121e RM, configuring local access windows should
116 * be followed by a dummy read of the config register that was
117 * modified last and an isync
119 i = im->sysconf.ddrlaw.ar;
120 __asm__ __volatile__ ("isync");
123 im->mddrc.ddr_sys_config = CFG_MDDRC_SYS_CFG_EN;
125 /* Initialize DDR Priority Manager */
126 im->mddrc.prioman_config1 = CFG_MDDRCGRP_PM_CFG1;
127 im->mddrc.prioman_config2 = CFG_MDDRCGRP_PM_CFG2;
128 im->mddrc.hiprio_config = CFG_MDDRCGRP_HIPRIO_CFG;
129 im->mddrc.lut_table0_main_upper = CFG_MDDRCGRP_LUT0_MU;
130 im->mddrc.lut_table0_main_lower = CFG_MDDRCGRP_LUT0_ML;
131 im->mddrc.lut_table1_main_upper = CFG_MDDRCGRP_LUT1_MU;
132 im->mddrc.lut_table1_main_lower = CFG_MDDRCGRP_LUT1_ML;
133 im->mddrc.lut_table2_main_upper = CFG_MDDRCGRP_LUT2_MU;
134 im->mddrc.lut_table2_main_lower = CFG_MDDRCGRP_LUT2_ML;
135 im->mddrc.lut_table3_main_upper = CFG_MDDRCGRP_LUT3_MU;
136 im->mddrc.lut_table3_main_lower = CFG_MDDRCGRP_LUT3_ML;
137 im->mddrc.lut_table4_main_upper = CFG_MDDRCGRP_LUT4_MU;
138 im->mddrc.lut_table4_main_lower = CFG_MDDRCGRP_LUT4_ML;
139 im->mddrc.lut_table0_alternate_upper = CFG_MDDRCGRP_LUT0_AU;
140 im->mddrc.lut_table0_alternate_lower = CFG_MDDRCGRP_LUT0_AL;
141 im->mddrc.lut_table1_alternate_upper = CFG_MDDRCGRP_LUT1_AU;
142 im->mddrc.lut_table1_alternate_lower = CFG_MDDRCGRP_LUT1_AL;
143 im->mddrc.lut_table2_alternate_upper = CFG_MDDRCGRP_LUT2_AU;
144 im->mddrc.lut_table2_alternate_lower = CFG_MDDRCGRP_LUT2_AL;
145 im->mddrc.lut_table3_alternate_upper = CFG_MDDRCGRP_LUT3_AU;
146 im->mddrc.lut_table3_alternate_lower = CFG_MDDRCGRP_LUT3_AL;
147 im->mddrc.lut_table4_alternate_upper = CFG_MDDRCGRP_LUT4_AU;
148 im->mddrc.lut_table4_alternate_lower = CFG_MDDRCGRP_LUT4_AL;
150 /* Initialize MDDRC */
151 im->mddrc.ddr_sys_config = CFG_MDDRC_SYS_CFG;
152 im->mddrc.ddr_time_config0 = CFG_MDDRC_TIME_CFG0;
153 im->mddrc.ddr_time_config1 = CFG_MDDRC_TIME_CFG1;
154 im->mddrc.ddr_time_config2 = CFG_MDDRC_TIME_CFG2;
157 for (i = 0; i < 10; i++)
158 im->mddrc.ddr_command = CFG_MICRON_NOP;
160 im->mddrc.ddr_command = CFG_MICRON_PCHG_ALL;
161 im->mddrc.ddr_command = CFG_MICRON_NOP;
162 im->mddrc.ddr_command = CFG_MICRON_RFSH;
163 im->mddrc.ddr_command = CFG_MICRON_NOP;
164 im->mddrc.ddr_command = CFG_MICRON_RFSH;
165 im->mddrc.ddr_command = CFG_MICRON_NOP;
166 im->mddrc.ddr_command = CFG_MICRON_INIT_DEV_OP;
167 im->mddrc.ddr_command = CFG_MICRON_NOP;
168 im->mddrc.ddr_command = CFG_MICRON_EM2;
169 im->mddrc.ddr_command = CFG_MICRON_NOP;
170 im->mddrc.ddr_command = CFG_MICRON_PCHG_ALL;
171 im->mddrc.ddr_command = CFG_MICRON_EM2;
172 im->mddrc.ddr_command = CFG_MICRON_EM3;
173 im->mddrc.ddr_command = CFG_MICRON_EN_DLL;
174 im->mddrc.ddr_command = CFG_MICRON_INIT_DEV_OP;
175 im->mddrc.ddr_command = CFG_MICRON_PCHG_ALL;
176 im->mddrc.ddr_command = CFG_MICRON_RFSH;
177 im->mddrc.ddr_command = CFG_MICRON_INIT_DEV_OP;
178 im->mddrc.ddr_command = CFG_MICRON_OCD_DEFAULT;
179 im->mddrc.ddr_command = CFG_MICRON_PCHG_ALL;
180 im->mddrc.ddr_command = CFG_MICRON_NOP;
183 im->mddrc.ddr_time_config0 = CFG_MDDRC_TIME_CFG0_RUN;
184 im->mddrc.ddr_sys_config = CFG_MDDRC_SYS_CFG_RUN;
189 int checkboard (void)
191 ushort brd_rev = *(vu_short *) (CFG_CPLD_BASE + 0x00);
192 uchar cpld_rev = *(vu_char *) (CFG_CPLD_BASE + 0x02);
193 volatile immap_t *im = (immap_t *) CFG_IMMR;
194 volatile unsigned long *reg;
197 printf ("Board: ADS5121 rev. 0x%04x (CPLD rev. 0x%02x)\n",
200 /* change the slew rate on all pata pins to max */
201 reg = (unsigned long *) &(im->io_ctrl.regs[PATA_CE1_IDX]);
202 for (i = 0; i < 9; i++)
203 reg[i] |= 0x00000003;
207 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
208 void ft_board_setup(void *blob, bd_t *bd)
210 ft_cpu_setup(blob, bd);
211 fdt_fixup_memory(blob, (u64)bd->bi_memstart, (u64)bd->bi_memsize);
213 #endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */