3 * Niklaus Giger (Niklaus.Giger@netstal.com)
5 * Sylvie Gohl, AMCC/IBM, gohl.sylvie@fr.ibm.com
6 * Jacqueline Pira-Ferriol, AMCC/IBM, jpira-ferriol@fr.ibm.com
7 * Thierry Roman, AMCC/IBM, thierry_roman@fr.ibm.com
8 * Alain Saurel, AMCC/IBM, alain.saurel@fr.ibm.com
9 * Robert Snyder, AMCC/IBM, rob.snyder@fr.ibm.com
12 * Stefan Roese, DENX Software Engineering, sr@denx.de.
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License as
16 * published by the Free Software Foundation; either version 2 of
17 * the License, or (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
30 /* define DEBUG for debug output */
34 #include <asm/processor.h>
39 void hcu_led_set(u32 value);
40 void dcbz_area(u32 start_address, u32 num_bytes);
43 #define DDR_DCR_BASE 0x10
44 #define ddrcfga (DDR_DCR_BASE+0x0) /* DDR configuration address reg */
45 #define ddrcfgd (DDR_DCR_BASE+0x1) /* DDR configuration data reg */
47 #define DDR0_01_INT_MASK_MASK 0x000000FF
48 #define DDR0_00_INT_ACK_ALL 0x7F000000
49 #define DDR0_01_INT_MASK_ALL_ON 0x000000FF
50 #define DDR0_01_INT_MASK_ALL_OFF 0x00000000
52 #define DDR0_17_DLLLOCKREG_MASK 0x00010000 /* Read only */
53 #define DDR0_17_DLLLOCKREG_UNLOCKED 0x00000000
54 #define DDR0_17_DLLLOCKREG_LOCKED 0x00010000
58 #define DDR0_22_CTRL_RAW_MASK 0x03000000
59 #define DDR0_22_CTRL_RAW_ECC_DISABLE 0x00000000 /* ECC not enabled */
60 #define DDR0_22_CTRL_RAW_ECC_CHECK_ONLY 0x01000000 /* ECC no correction */
61 #define DDR0_22_CTRL_RAW_NO_ECC_RAM 0x02000000 /* Not a ECC RAM*/
62 #define DDR0_22_CTRL_RAW_ECC_ENABLE 0x03000000 /* ECC correcting on */
63 #define DDR0_03_CASLAT_DECODE(n) ((((unsigned long)(n))>>16)&0x7)
65 #define MY_TLB_WORD2_I_ENABLE TLB_WORD2_I_ENABLE
66 /* disable caching on DDR2 */
68 void program_tlb(u32 phys_addr, u32 virt_addr, u32 size, u32 tlb_word2_i_value);
70 void board_add_ram_info(int use_default)
72 PPC4xx_SYS_INFO board_cfg;
74 mfsdram(DDR0_22, val);
75 val &= DDR0_22_CTRL_RAW_MASK;
77 case DDR0_22_CTRL_RAW_ECC_DISABLE:
78 puts(" (ECC disabled");
80 case DDR0_22_CTRL_RAW_ECC_CHECK_ONLY:
81 puts(" (ECC check only");
83 case DDR0_22_CTRL_RAW_NO_ECC_RAM:
86 case DDR0_22_CTRL_RAW_ECC_ENABLE:
87 puts(" (ECC enabled");
91 get_sys_info(&board_cfg);
92 printf(", %d MHz", (board_cfg.freqPLB * 2) / 1000000);
94 mfsdram(DDR0_03, val);
95 val = DDR0_03_CASLAT_DECODE(val);
96 printf(", CL%d)", val);
99 /*--------------------------------------------------------------------
101 *--------------------------------------------------------------------*/
102 static int wait_for_dlllock(void)
107 /* -----------------------------------------------------------+
108 * Wait for the DCC master delay line to finish calibration
109 * ----------------------------------------------------------*/
110 mtdcr(ddrcfga, DDR0_17);
111 val = DDR0_17_DLLLOCKREG_UNLOCKED;
113 while (wait != 0xffff) {
114 val = mfdcr(ddrcfgd);
115 if ((val & DDR0_17_DLLLOCKREG_MASK) ==
116 DDR0_17_DLLLOCKREG_LOCKED)
117 /* dlllockreg bit on */
122 debug("0x%04x: DDR0_17 Value (dlllockreg bit): 0x%08x\n", wait, val);
123 debug("Waiting for dlllockreg bit to raise\n");
128 /***********************************************************************
130 * sdram_panic -- Panic if we cannot configure the sdram correctly
132 ************************************************************************/
133 void sdram_panic(const char *reason)
135 printf("\n%s: reason %s", __FUNCTION__, reason);
142 #ifdef CONFIG_DDR_ECC
143 static void blank_string(int size)
147 for (i=0; i<size; i++)
149 for (i=0; i<size; i++)
151 for (i=0; i<size; i++)
154 /*---------------------------------------------------------------------------+
156 *---------------------------------------------------------------------------*/
157 static void program_ecc(unsigned long start_address, unsigned long num_bytes)
160 char str[] = "ECC generation -";
161 #if defined(CONFIG_PRAM)
164 /* Check whether vxWorks is using EDR logging, if yes zero */
165 /* also PostMortem and user reserved memory */
166 magic= in_be32(start_address + num_bytes -
167 (CONFIG_PRAM*1024) + sizeof(u32));
169 debug("\n%s: CONFIG_PRAM %d kB magic 0x%x 0x%p -> 0x%x\n", __FUNCTION__,
171 start_address + num_bytes - (CONFIG_PRAM*1024) + sizeof(u32),
172 magic, in_be32(magic));
173 if (in_be32(magic) == 0xbeefbabe)
174 num_bytes -= (CONFIG_PRAM*1024) - PM_RESERVED_MEM;
183 /* ECC bit set method for cached memory */
184 /* Fast method, no noticeable delay */
185 dcbz_area(start_address, num_bytes);
187 blank_string(strlen(str));
189 /* Clear error status */
190 mfsdram(DDR0_00, val);
191 mtsdram(DDR0_00, val | DDR0_00_INT_ACK_ALL);
194 * Clear possible ECC errors
195 * If not done, then we could get an interrupt later on when
196 * exceptions are enabled.
198 mtspr(mcsr, mfspr(mcsr));
200 /* Set 'int_mask' parameter to functionnal value */
201 mfsdram(DDR0_01, val);
202 mtsdram(DDR0_01, ((val &~ DDR0_01_INT_MASK_MASK) |
203 DDR0_01_INT_MASK_ALL_OFF));
211 /***********************************************************************
213 * initdram -- 440EPx's DDR controller is a DENALI Core
215 ************************************************************************/
216 long int initdram (int board_type)
218 #define HCU_HW_SDRAM_CONFIG_MASK 0x7
219 #define INVALID_HW_CONFIG "Invalid HW-Config"
220 u16 *hwVersReg = (u16 *) HCU_HW_VERSION_REGISTER;
221 unsigned int dram_size = 0;
223 mtsdram(DDR0_02, 0x00000000);
225 /* Values must be kept in sync with Excel-table <<A0001492.>> ! */
226 mtsdram(DDR0_00, 0x0000190A);
227 mtsdram(DDR0_01, 0x01000000);
228 mtsdram(DDR0_03, 0x02030602);
229 mtsdram(DDR0_04, 0x0A020200);
230 mtsdram(DDR0_05, 0x02020307);
231 switch (*hwVersReg & HCU_HW_SDRAM_CONFIG_MASK) {
233 dram_size = 256 * 1024 * 1024 ;
234 mtsdram(DDR0_06, 0x0102C812); /* 256MB RAM */
235 mtsdram(DDR0_11, 0x0014C800); /* 256MB RAM */
236 mtsdram(DDR0_43, 0x030A0200); /* 256MB RAM */
240 dram_size = 128 * 1024 * 1024 ;
241 mtsdram(DDR0_06, 0x0102C80D); /* 128MB RAM */
242 mtsdram(DDR0_11, 0x000FC800); /* 128MB RAM */
243 mtsdram(DDR0_43, 0x030A0300); /* 128MB RAM */
246 mtsdram(DDR0_07, 0x00090100);
249 * TCPD=200 cycles of clock input is required to lock the DLL.
250 * CKE must be HIGH the entire time.mtsdram(DDR0_08, 0x02C80001);
252 mtsdram(DDR0_08, 0x02C80001);
253 mtsdram(DDR0_09, 0x00011D5F);
254 mtsdram(DDR0_10, 0x00000100);
255 mtsdram(DDR0_12, 0x00000003);
256 mtsdram(DDR0_14, 0x00000000);
257 mtsdram(DDR0_17, 0x1D000000);
258 mtsdram(DDR0_18, 0x1D1D1D1D);
259 mtsdram(DDR0_19, 0x1D1D1D1D);
260 mtsdram(DDR0_20, 0x0B0B0B0B);
261 mtsdram(DDR0_21, 0x0B0B0B0B);
262 #define ECC_RAM 0x03267F0B
263 #define NO_ECC_RAM 0x00267F0B
264 #ifdef CONFIG_DDR_ECC
265 mtsdram(DDR0_22, ECC_RAM);
267 mtsdram(DDR0_22, NO_ECC_RAM);
270 mtsdram(DDR0_23, 0x00000000);
271 mtsdram(DDR0_24, 0x01020001);
272 mtsdram(DDR0_26, 0x2D930517);
273 mtsdram(DDR0_27, 0x00008236);
274 mtsdram(DDR0_28, 0x00000000);
275 mtsdram(DDR0_31, 0x00000000);
276 mtsdram(DDR0_42, 0x01000006);
277 mtsdram(DDR0_44, 0x00000003);
278 mtsdram(DDR0_02, 0x00000001);
280 mtsdram(DDR0_00, 0x40000000); /* Zero init bit */
283 * Program tlb entries for this size (dynamic)
285 remove_tlb(CFG_SDRAM_BASE, 256 << 20);
286 program_tlb(0, 0, dram_size, TLB_WORD2_W_ENABLE | TLB_WORD2_I_ENABLE);
289 * Setup 2nd TLB with same physical address but different virtual
290 * address with cache enabled. This is done for fast ECC generation.
292 program_tlb(0, CFG_DDR_CACHED_ADDR, dram_size, 0);
294 #ifdef CONFIG_DDR_ECC
296 * If ECC is enabled, initialize the parity bits.
298 program_ecc(CFG_DDR_CACHED_ADDR, dram_size);