2 * Copyright (C) 2004 PaulReynolds@lhsolutions.com
5 * Stefan Roese, DENX Software Engineering, sr@denx.de.
7 * See file CREDITS for list of people who contributed to this
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of
13 * the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
27 #include <asm/processor.h>
28 #include <spd_sdram.h>
29 #include <ppc4xx_enet.h>
31 #ifdef CFG_INIT_SHOW_RESET_REG
32 void show_reset_reg(void);
35 DECLARE_GLOBAL_DATA_PTR;
39 int board_early_init_f (void)
42 volatile unsigned int *GpioOdr;
43 volatile unsigned int *GpioTcr;
44 volatile unsigned int *GpioOr;
46 /*-------------------------------------------------------------------------+
47 | Initialize EBC CONFIG
48 +-------------------------------------------------------------------------*/
49 mtebc(xbcfg, EBC_CFG_LE_UNLOCK |
50 EBC_CFG_PTD_ENABLE | EBC_CFG_RTC_64PERCLK |
51 EBC_CFG_ATC_PREVIOUS | EBC_CFG_DTC_PREVIOUS |
52 EBC_CFG_CTC_PREVIOUS | EBC_CFG_EMC_DEFAULT |
53 EBC_CFG_PME_DISABLE | EBC_CFG_PR_32);
55 /*-------------------------------------------------------------------------+
56 | 64MB FLASH. Initialize bank 0 with default values.
57 +-------------------------------------------------------------------------*/
58 mtebc(pb0ap, EBC_BXAP_BME_DISABLED|EBC_BXAP_TWT_ENCODE(15) |
59 EBC_BXAP_BCE_DISABLE |
60 EBC_BXAP_CSN_ENCODE(1) | EBC_BXAP_OEN_ENCODE(1) |
61 EBC_BXAP_WBN_ENCODE(1) | EBC_BXAP_WBF_ENCODE(1) |
62 EBC_BXAP_TH_ENCODE(3) | EBC_BXAP_RE_DISABLED |
63 EBC_BXAP_BEM_WRITEONLY |
64 EBC_BXAP_PEN_DISABLED);
65 mtebc(pb0cr, EBC_BXCR_BAS_ENCODE(CFG_FLASH_BASE) |
66 EBC_BXCR_BS_64MB | EBC_BXCR_BU_RW|EBC_BXCR_BW_32BIT);
68 /*-------------------------------------------------------------------------+
69 | FPGA. Initialize bank 1 with default values.
70 +-------------------------------------------------------------------------*/
71 mtebc(pb1ap, EBC_BXAP_BME_DISABLED|EBC_BXAP_TWT_ENCODE(5) |
72 EBC_BXAP_BCE_DISABLE |
73 EBC_BXAP_CSN_ENCODE(1) | EBC_BXAP_OEN_ENCODE(1) |
74 EBC_BXAP_WBN_ENCODE(1) | EBC_BXAP_WBF_ENCODE(1) |
75 EBC_BXAP_TH_ENCODE(3) | EBC_BXAP_RE_DISABLED |
76 EBC_BXAP_BEM_WRITEONLY |
77 EBC_BXAP_PEN_DISABLED);
78 mtebc(pb1cr, EBC_BXCR_BAS_ENCODE(0x41000000) |
79 EBC_BXCR_BS_1MB | EBC_BXCR_BU_RW | EBC_BXCR_BW_8BIT);
81 /*-------------------------------------------------------------------------+
82 | LCM. Initialize bank 2 with default values.
83 +-------------------------------------------------------------------------*/
84 mtebc(pb2ap, EBC_BXAP_BME_DISABLED | EBC_BXAP_TWT_ENCODE(64) |
85 EBC_BXAP_BCE_DISABLE |
86 EBC_BXAP_CSN_ENCODE(3) | EBC_BXAP_OEN_ENCODE(3) |
87 EBC_BXAP_WBN_ENCODE(3) | EBC_BXAP_WBF_ENCODE(3) |
88 EBC_BXAP_TH_ENCODE(7) | EBC_BXAP_RE_DISABLED |
89 EBC_BXAP_BEM_WRITEONLY |
90 EBC_BXAP_PEN_DISABLED);
91 mtebc(pb2cr, EBC_BXCR_BAS_ENCODE(0x42000000) |
92 EBC_BXCR_BS_1MB | EBC_BXCR_BU_RW|EBC_BXCR_BW_8BIT);
94 /*-------------------------------------------------------------------------+
95 | TMP. Initialize bank 3 with default values.
96 +-------------------------------------------------------------------------*/
97 mtebc(pb3ap, EBC_BXAP_BME_DISABLED | EBC_BXAP_TWT_ENCODE(128) |
98 EBC_BXAP_BCE_DISABLE |
99 EBC_BXAP_CSN_ENCODE(3) | EBC_BXAP_OEN_ENCODE(3) |
100 EBC_BXAP_WBN_ENCODE(3) | EBC_BXAP_WBF_ENCODE(3) |
101 EBC_BXAP_TH_ENCODE(7) | EBC_BXAP_RE_DISABLED |
102 EBC_BXAP_BEM_WRITEONLY |
103 EBC_BXAP_PEN_DISABLED);
104 mtebc(pb3cr, EBC_BXCR_BAS_ENCODE(0x48000000) |
105 EBC_BXCR_BS_64MB | EBC_BXCR_BU_RW | EBC_BXCR_BW_32BIT);
107 /*-------------------------------------------------------------------------+
108 | Connector 4~7. Initialize bank 3~ 7 with default values.
109 +-------------------------------------------------------------------------*/
119 /*--------------------------------------------------------------------
120 * Setup the interrupt controller polarities, triggers, etc.
121 *-------------------------------------------------------------------*/
123 * Because of the interrupt handling rework to handle 440GX interrupts
124 * with the common code, we needed to change names of the UIC registers.
125 * Here the new relationship:
127 * U-Boot name 440GX name
128 * -----------------------
134 mtdcr (uic1sr, 0xffffffff); /* clear all */
135 mtdcr (uic1er, 0x00000000); /* disable all */
136 mtdcr (uic1cr, 0x00000009); /* SMI & UIC1 crit are critical */
137 mtdcr (uic1pr, 0xfffffe13); /* per ref-board manual */
138 mtdcr (uic1tr, 0x01c00008); /* per ref-board manual */
139 mtdcr (uic1vr, 0x00000001); /* int31 highest, base=0x000 */
140 mtdcr (uic1sr, 0xffffffff); /* clear all */
142 mtdcr (uic2sr, 0xffffffff); /* clear all */
143 mtdcr (uic2er, 0x00000000); /* disable all */
144 mtdcr (uic2cr, 0x00000000); /* all non-critical */
145 mtdcr (uic2pr, 0xffffe0ff); /* per ref-board manual */
146 mtdcr (uic2tr, 0x00ffc000); /* per ref-board manual */
147 mtdcr (uic2vr, 0x00000001); /* int31 highest, base=0x000 */
148 mtdcr (uic2sr, 0xffffffff); /* clear all */
150 mtdcr (uic3sr, 0xffffffff); /* clear all */
151 mtdcr (uic3er, 0x00000000); /* disable all */
152 mtdcr (uic3cr, 0x00000000); /* all non-critical */
153 mtdcr (uic3pr, 0xffffffff); /* per ref-board manual */
154 mtdcr (uic3tr, 0x00ff8c0f); /* per ref-board manual */
155 mtdcr (uic3vr, 0x00000001); /* int31 highest, base=0x000 */
156 mtdcr (uic3sr, 0xffffffff); /* clear all */
158 mtdcr (uic0sr, 0xfc000000); /* clear all */
159 mtdcr (uic0er, 0x00000000); /* disable all */
160 mtdcr (uic0cr, 0x00000000); /* all non-critical */
161 mtdcr (uic0pr, 0xfc000000); /* */
162 mtdcr (uic0tr, 0x00000000); /* */
163 mtdcr (uic0vr, 0x00000001); /* */
165 /* Enable two GPIO 10~11 and TraceA signal */
174 /* Set GPIO 10 and 11 as output */
175 GpioOdr = (volatile unsigned int*)(CFG_PERIPHERAL_BASE+0x718);
176 GpioTcr = (volatile unsigned int*)(CFG_PERIPHERAL_BASE+0x704);
177 GpioOr = (volatile unsigned int*)(CFG_PERIPHERAL_BASE+0x700);
179 *GpioOdr &= ~(0x00300000);
180 *GpioTcr |= 0x00300000;
181 *GpioOr |= 0x00300000;
186 int misc_init_r(void)
193 int checkboard (void)
195 char *s = getenv ("serial#");
197 printf ("Board: Taishan - AMCC PPC440GX Evaluation Board");
204 #ifdef CFG_INIT_SHOW_RESET_REG
211 /*************************************************************************
214 * This routine is called just prior to registering the hose and gives
215 * the board the opportunity to check things. Returning a value of zero
216 * indicates that things are bad & PCI initialization should be aborted.
218 * Different boards may wish to customize the pci controller structure
219 * (add regions, override default access routines, etc) or perform
220 * certain pre-initialization actions.
222 ************************************************************************/
223 #if defined(CONFIG_PCI)
224 int pci_pre_init(struct pci_controller * hose )
228 /*--------------------------------------------------------------------------+
229 * The ocotea board is always configured as the host & requires the
230 * PCI arbiter to be enabled.
231 *--------------------------------------------------------------------------*/
232 mfsdr(sdr_sdstp1, strap);
233 if( (strap & SDR0_SDSTP1_PAE_MASK) == 0 ){
234 printf("PCI: SDR0_STRP1[%08lX] - PCI Arbiter disabled.\n",strap);
240 #endif /* defined(CONFIG_PCI) */
242 /*************************************************************************
245 * The bootstrap configuration provides default settings for the pci
246 * inbound map (PIM). But the bootstrap config choices are limited and
247 * may not be sufficient for a given board.
249 ************************************************************************/
250 #if defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT)
251 void pci_target_init(struct pci_controller * hose )
253 /*--------------------------------------------------------------------------+
255 *--------------------------------------------------------------------------*/
256 out32r( PCIX0_PIM0SA, 0 ); /* disable */
257 out32r( PCIX0_PIM1SA, 0 ); /* disable */
258 out32r( PCIX0_PIM2SA, 0 ); /* disable */
259 out32r( PCIX0_EROMBA, 0 ); /* disable expansion rom */
261 /*--------------------------------------------------------------------------+
262 * Map all of SDRAM to PCI address 0x0000_0000. Note that the 440 strapping
263 * options to not support sizes such as 128/256 MB.
264 *--------------------------------------------------------------------------*/
265 out32r( PCIX0_PIM0LAL, CFG_SDRAM_BASE );
266 out32r( PCIX0_PIM0LAH, 0 );
267 out32r( PCIX0_PIM0SA, ~(gd->ram_size - 1) | 1 );
269 out32r( PCIX0_BAR0, 0 );
271 /*--------------------------------------------------------------------------+
272 * Program the board's subsystem id/vendor id
273 *--------------------------------------------------------------------------*/
274 out16r( PCIX0_SBSYSVID, CFG_PCI_SUBSYS_VENDORID );
275 out16r( PCIX0_SBSYSID, CFG_PCI_SUBSYS_DEVICEID );
277 out16r( PCIX0_CMD, in16r(PCIX0_CMD) | PCI_COMMAND_MEMORY );
279 #endif /* defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT) */
281 /*************************************************************************
284 * This routine is called to determine if a pci scan should be
285 * performed. With various hardware environments (especially cPCI and
286 * PPMC) it's insufficient to depend on the state of the arbiter enable
287 * bit in the strap register, or generic host/adapter assumptions.
289 * Rather than hard-code a bad assumption in the general 440 code, the
290 * 440 pci code requires the board to decide at runtime.
292 * Return 0 for adapter mode, non-zero for host (monarch) mode.
295 ************************************************************************/
296 #if defined(CONFIG_PCI)
297 int is_pci_host(struct pci_controller *hose)
299 /* The ocotea board is always configured as host. */
302 #endif /* defined(CONFIG_PCI) */
306 * Returns 1 if keys pressed to start the power-on long-running tests
307 * Called from board_init_f().
309 int post_hotkeys_pressed(void)