2 * Copyright (C) 2003 Travis B. Sawyer <travis.sawyer@sandburst.com>
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,
25 #include <asm/processor.h>
26 #include <spd_sdram.h>
29 DECLARE_GLOBAL_DATA_PTR;
31 #define BOOT_SMALL_FLASH 32 /* 00100000 */
32 #define FLASH_ONBD_N 2 /* 00000010 */
33 #define FLASH_SRAM_SEL 1 /* 00000001 */
35 long int fixed_sdram (void);
37 int board_early_init_f(void)
40 /* TBS: Setup the GPIO access for the user LEDs */
41 mfsdr(sdr_pfc0, sdrreg);
42 mtsdr(sdr_pfc0, (sdrreg & ~0x00000100) | 0x00000E00);
43 out32(CFG_GPIO_BASE + 0x018, (USR_LED0 | USR_LED1 | USR_LED2 | USR_LED3));
49 /*--------------------------------------------------------------------
50 * Setup the external bus controller/chip selects
51 *-------------------------------------------------------------------*/
53 /* set the bus controller */
54 mtebc (pb0ap, 0x04055200); /* FLASH/SRAM */
55 mtebc (pb0cr, 0xfff18000); /* BAS=0xfff 1MB R/W 8-bit */
56 mtebc (pb1ap, 0x04055200); /* FLASH/SRAM */
57 mtebc (pb1cr, 0xfe098000); /* BAS=0xff8 16MB R/W 8-bit */
59 /*--------------------------------------------------------------------
60 * Setup the interrupt controller polarities, triggers, etc.
61 *-------------------------------------------------------------------*/
62 mtdcr (uic0sr, 0xffffffff); /* clear all */
63 mtdcr (uic0er, 0x00000000); /* disable all */
64 mtdcr (uic0cr, 0x00000003); /* SMI & UIC1 crit are critical */
65 mtdcr (uic0pr, 0xfffffe00); /* per ref-board manual */
66 mtdcr (uic0tr, 0x01c00000); /* per ref-board manual */
67 mtdcr (uic0vr, 0x00000001); /* int31 highest, base=0x000 */
68 mtdcr (uic0sr, 0xffffffff); /* clear all */
70 mtdcr (uic1sr, 0xffffffff); /* clear all */
71 mtdcr (uic1er, 0x00000000); /* disable all */
72 mtdcr (uic1cr, 0x00000000); /* all non-critical */
73 mtdcr (uic1pr, 0xffffc0ff); /* per ref-board manual */
74 mtdcr (uic1tr, 0x00ff8000); /* per ref-board manual */
75 mtdcr (uic1vr, 0x00000001); /* int31 highest, base=0x000 */
76 mtdcr (uic1sr, 0xffffffff); /* clear all */
78 mtdcr (uic2sr, 0xffffffff); /* clear all */
79 mtdcr (uic2er, 0x00000000); /* disable all */
80 mtdcr (uic2cr, 0x00000000); /* all non-critical */
81 mtdcr (uic2pr, 0xffffffff); /* per ref-board manual */
82 mtdcr (uic2tr, 0x00ff8c0f); /* per ref-board manual */
83 mtdcr (uic2vr, 0x00000001); /* int31 highest, base=0x000 */
84 mtdcr (uic2sr, 0xffffffff); /* clear all */
86 mtdcr (uicb0sr, 0xfc000000); /* clear all */
87 mtdcr (uicb0er, 0x00000000); /* disable all */
88 mtdcr (uicb0cr, 0x00000000); /* all non-critical */
89 mtdcr (uicb0pr, 0xfc000000); /* */
90 mtdcr (uicb0tr, 0x00000000); /* */
91 mtdcr (uicb0vr, 0x00000001); /* */
101 printf ("Board: XES XPedite1000 440GX\n");
107 long int initdram (int board_type)
111 #if defined(CONFIG_SPD_EEPROM)
112 dram_size = spd_sdram ();
114 dram_size = fixed_sdram ();
120 #if defined(CFG_DRAM_TEST)
123 uint *pstart = (uint *) 0x00000000;
124 uint *pend = (uint *) 0x08000000;
127 for (p = pstart; p < pend; p++)
130 for (p = pstart; p < pend; p++) {
131 if (*p != 0xaaaaaaaa) {
132 printf ("SDRAM test fails at: %08x\n", (uint) p);
137 for (p = pstart; p < pend; p++)
140 for (p = pstart; p < pend; p++) {
141 if (*p != 0x55555555) {
142 printf ("SDRAM test fails at: %08x\n", (uint) p);
150 #if !defined(CONFIG_SPD_EEPROM)
151 /*************************************************************************
152 * fixed sdram init -- doesn't use serial presence detect.
154 * Assumes: 128 MB, non-ECC, non-registered
157 ************************************************************************/
158 long int fixed_sdram (void)
162 /*--------------------------------------------------------------------
164 *------------------------------------------------------------------*/
165 mtsdram (mem_uabba, 0x00000000); /* ubba=0 (default) */
166 mtsdram (mem_slio, 0x00000000); /* rdre=0 wrre=0 rarw=0 */
167 mtsdram (mem_devopt, 0x00000000); /* dll=0 ds=0 (normal) */
168 mtsdram (mem_wddctr, 0x00000000); /* wrcp=0 dcd=0 */
169 mtsdram (mem_clktr, 0x40000000); /* clkp=1 (90 deg wr) dcdt=0 */
171 /*--------------------------------------------------------------------
172 * Setup for board-specific specific mem
173 *------------------------------------------------------------------*/
175 * Following for CAS Latency = 2.5 @ 133 MHz PLB
177 mtsdram (mem_b0cr, 0x000a4001); /* SDBA=0x000 128MB, Mode 3, enabled */
178 mtsdram (mem_tr0, 0x410a4012); /* WR=2 WD=1 CL=2.5 PA=3 CP=4 LD=2 */
180 mtsdram (mem_tr1, 0x8080082f); /* SS=T2 SL=STAGE 3 CD=1 CT=0x02f */
181 mtsdram (mem_rtr, 0x08200000); /* Rate 15.625 ns @ 133 MHz PLB */
182 mtsdram (mem_cfg1, 0x00000000); /* Self-refresh exit, disable PM */
183 udelay (400); /* Delay 200 usecs (min) */
185 /*--------------------------------------------------------------------
186 * Enable the controller, then wait for DCEN to complete
187 *------------------------------------------------------------------*/
188 mtsdram (mem_cfg0, 0x86000000); /* DCEN=1, PMUD=1, 64-bit */
190 mfsdram (mem_mcsts, reg);
191 if (reg & 0x80000000)
195 return (128 * 1024 * 1024); /* 128 MB */
197 #endif /* !defined(CONFIG_SPD_EEPROM) */
200 /*************************************************************************
203 * This routine is called just prior to registering the hose and gives
204 * the board the opportunity to check things. Returning a value of zero
205 * indicates that things are bad & PCI initialization should be aborted.
207 * Different boards may wish to customize the pci controller structure
208 * (add regions, override default access routines, etc) or perform
209 * certain pre-initialization actions.
211 ************************************************************************/
212 #if defined(CONFIG_PCI) && defined(CFG_PCI_PRE_INIT)
213 int pci_pre_init(struct pci_controller * hose )
216 /* See if we're supposed to setup the pci */
217 mfsdr(sdr_sdstp1, strap);
218 if ((strap & 0x00010000) == 0) {
222 #if defined(CFG_PCI_FORCE_PCI_CONV)
223 /* Setup System Device Register PCIX0_XCR */
224 mfsdr(sdr_xcr, strap);
226 mtsdr(sdr_xcr, strap);
230 #endif /* defined(CONFIG_PCI) && defined(CFG_PCI_PRE_INIT) */
232 /*************************************************************************
235 * The bootstrap configuration provides default settings for the pci
236 * inbound map (PIM). But the bootstrap config choices are limited and
237 * may not be sufficient for a given board.
239 ************************************************************************/
240 #if defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT)
241 void pci_target_init(struct pci_controller * hose )
243 /*--------------------------------------------------------------------------+
245 *--------------------------------------------------------------------------*/
246 out32r( PCIX0_PIM0SA, 0 ); /* disable */
247 out32r( PCIX0_PIM1SA, 0 ); /* disable */
248 out32r( PCIX0_PIM2SA, 0 ); /* disable */
249 out32r( PCIX0_EROMBA, 0 ); /* disable expansion rom */
251 /*--------------------------------------------------------------------------+
252 * Map all of SDRAM to PCI address 0x0000_0000. Note that the 440 strapping
253 * options to not support sizes such as 128/256 MB.
254 *--------------------------------------------------------------------------*/
255 out32r( PCIX0_PIM0LAL, CFG_SDRAM_BASE );
256 out32r( PCIX0_PIM0LAH, 0 );
257 out32r( PCIX0_PIM0SA, ~(gd->ram_size - 1) | 1 );
259 out32r( PCIX0_BAR0, 0 );
261 /*--------------------------------------------------------------------------+
262 * Program the board's subsystem id/vendor id
263 *--------------------------------------------------------------------------*/
264 out16r( PCIX0_SBSYSVID, CFG_PCI_SUBSYS_VENDORID );
265 out16r( PCIX0_SBSYSID, CFG_PCI_SUBSYS_DEVICEID );
267 out16r( PCIX0_CMD, in16r(PCIX0_CMD) | PCI_COMMAND_MEMORY );
269 #endif /* defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT) */
272 /*************************************************************************
275 * This routine is called to determine if a pci scan should be
276 * performed. With various hardware environments (especially cPCI and
277 * PPMC) it's insufficient to depend on the state of the arbiter enable
278 * bit in the strap register, or generic host/adapter assumptions.
280 * Rather than hard-code a bad assumption in the general 440 code, the
281 * 440 pci code requires the board to decide at runtime.
283 * Return 0 for adapter mode, non-zero for host (monarch) mode.
286 ************************************************************************/
287 #if defined(CONFIG_PCI)
288 int is_pci_host(struct pci_controller *hose)
290 return ((in32(CFG_GPIO_BASE + 0x1C) & 0x00000800) == 0);
292 #endif /* defined(CONFIG_PCI) */
296 * Returns 1 if keys pressed to start the power-on long-running tests
297 * Called from board_init_f().
299 int post_hotkeys_pressed(void)
305 void post_word_store (ulong a)
307 volatile ulong *save_addr =
308 (volatile ulong *)(CFG_POST_WORD_ADDR);
313 ulong post_word_load (void)
315 volatile ulong *save_addr =
316 (volatile ulong *)(CFG_POST_WORD_ADDR);
322 /*-----------------------------------------------------------------------------
323 * board_get_enetaddr -- Read the MAC Addresses in the I2C EEPROM
324 *-----------------------------------------------------------------------------
326 static int enetaddr_num = 0;
327 void board_get_enetaddr (uchar * enet)
330 unsigned char buff[0x100], *cp;
333 i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
335 /* Read 256 bytes in EEPROM */
336 i2c_read (0x50, 0, 1, buff, 0x100);
338 if (enetaddr_num == 0) {
345 for (i = 0; i < 6; i++,cp++)
348 printf ("MAC address = %02x:%02x:%02x:%02x:%02x:%02x\n",
349 enet[0], enet[1], enet[2], enet[3], enet[4], enet[5]);