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,
24 #include <asm/processor.h>
25 #include <spd_sdram.h>
29 DECLARE_GLOBAL_DATA_PTR;
31 int board_early_init_f(void)
36 * Enable GPIO for pins 18 - 24
45 mfsdr(sdr_pfc0, sdrreg);
46 mtsdr(sdr_pfc0, (sdrreg & ~SDR0_PFC0_TRE_ENABLE) | 0x00003e00);
47 out32(CONFIG_SYS_GPIO_BASE + 0x018, (USR_LED0 | USR_LED1 | USR_LED2 | USR_LED3));
53 /* Setup the external bus controller/chip selects */
54 mtebc(pb0ap, 0x04055200); /* 16MB Strata FLASH */
55 mtebc(pb0cr, 0xff098000); /* BAS=0xff0 16MB R/W 8-bit */
56 mtebc(pb1ap, 0x04055200); /* 512KB Socketed AMD FLASH */
57 mtebc(pb1cr, 0xfe018000); /* BAS=0xfe0 1MB R/W 8-bit */
58 mtebc(pb6ap, 0x05006400); /* 32-64MB AMD MirrorBit FLASH */
59 mtebc(pb6cr, 0xf00da000); /* BAS=0xf00 64MB R/W i6-bit */
60 mtebc(pb7ap, 0x05006400); /* 32-64MB AMD MirrorBit FLASH */
61 mtebc(pb7cr, 0xf40da000); /* BAS=0xf40 64MB R/W 16-bit */
64 * Setup the interrupt controller polarities, triggers, etc.
66 * Because of the interrupt handling rework to handle 440GX interrupts
67 * with the common code, we needed to change names of the UIC registers.
68 * Here the new relationship:
70 * U-Boot name 440GX name
71 * -----------------------
77 mtdcr(uic1sr, 0xffffffff); /* clear all */
78 mtdcr(uic1er, 0x00000000); /* disable all */
79 mtdcr(uic1cr, 0x00000003); /* SMI & UIC1 crit are critical */
80 mtdcr(uic1pr, 0xfffffe00); /* per ref-board manual */
81 mtdcr(uic1tr, 0x01c00000); /* per ref-board manual */
82 mtdcr(uic1vr, 0x00000001); /* int31 highest, base=0x000 */
83 mtdcr(uic1sr, 0xffffffff); /* clear all */
85 mtdcr(uic2sr, 0xffffffff); /* clear all */
86 mtdcr(uic2er, 0x00000000); /* disable all */
87 mtdcr(uic2cr, 0x00000000); /* all non-critical */
88 mtdcr(uic2pr, 0xffffc0ff); /* per ref-board manual */
89 mtdcr(uic2tr, 0x00ff8000); /* per ref-board manual */
90 mtdcr(uic2vr, 0x00000001); /* int31 highest, base=0x000 */
91 mtdcr(uic2sr, 0xffffffff); /* clear all */
93 mtdcr(uic3sr, 0xffffffff); /* clear all */
94 mtdcr(uic3er, 0x00000000); /* disable all */
95 mtdcr(uic3cr, 0x00000000); /* all non-critical */
96 mtdcr(uic3pr, 0xffffffff); /* per ref-board manual */
97 mtdcr(uic3tr, 0x00ff8c0f); /* per ref-board manual */
98 mtdcr(uic3vr, 0x00000001); /* int31 highest, base=0x000 */
99 mtdcr(uic3sr, 0xffffffff); /* clear all */
101 mtdcr(uic0sr, 0xfc000000); /* clear all */
102 mtdcr(uic0er, 0x00000000); /* disable all */
103 mtdcr(uic0cr, 0x00000000); /* all non-critical */
104 mtdcr(uic0pr, 0xfc000000); /* */
105 mtdcr(uic0tr, 0x00000000); /* */
106 mtdcr(uic0vr, 0x00000001); /* */
117 printf("Board: X-ES %s PMC SBC\n", CONFIG_SYS_BOARD_NAME);
119 s = getenv("board_rev");
121 printf("Rev %s, ", s);
122 s = getenv("serial#");
124 printf("Serial# %s, ", s);
125 s = getenv("board_cfg");
133 phys_size_t initdram(int board_type)
139 * This routine is called just prior to registering the hose and gives
140 * the board the opportunity to check things. Returning a value of zero
141 * indicates that things are bad & PCI initialization should be aborted.
143 * Different boards may wish to customize the pci controller structure
144 * (add regions, override default access routines, etc) or perform
145 * certain pre-initialization actions.
148 #if defined(CONFIG_PCI)
149 int pci_pre_init(struct pci_controller * hose)
153 /* See if we're supposed to setup the pci */
154 mfsdr(sdr_sdstp1, strap);
155 if ((strap & 0x00010000) == 0)
158 #if defined(CONFIG_SYS_PCI_FORCE_PCI_CONV)
159 /* Setup System Device Register PCIX0_XCR */
160 mfsdr(sdr_xcr, strap);
162 mtsdr(sdr_xcr, strap);
167 #endif /* defined(CONFIG_PCI) */
169 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_PCI_TARGET_INIT)
171 * The bootstrap configuration provides default settings for the pci
172 * inbound map (PIM). But the bootstrap config choices are limited and
173 * may not be sufficient for a given board.
175 void pci_target_init(struct pci_controller * hose)
177 /* Disable everything */
178 out32r(PCIX0_PIM0SA, 0);
179 out32r(PCIX0_PIM1SA, 0);
180 out32r(PCIX0_PIM2SA, 0);
181 out32r(PCIX0_EROMBA, 0); /* disable expansion rom */
184 * Map all of SDRAM to PCI address 0x0000_0000. Note that the 440 strapping
185 * options to not support sizes such as 128/256 MB.
187 out32r(PCIX0_PIM0LAL, CONFIG_SYS_SDRAM_BASE);
188 out32r(PCIX0_PIM0LAH, 0);
189 out32r(PCIX0_PIM0SA, ~(gd->ram_size - 1) | 1);
191 out32r(PCIX0_BAR0, 0);
193 /* Program the board's subsystem id/vendor id */
194 out16r(PCIX0_SBSYSVID, CONFIG_SYS_PCI_SUBSYS_VENDORID);
195 out16r(PCIX0_SBSYSID, CONFIG_SYS_PCI_SUBSYS_DEVICEID);
197 out16r(PCIX0_CMD, in16r(PCIX0_CMD) | PCI_COMMAND_MEMORY);
199 #endif /* defined(CONFIG_PCI) && defined(CONFIG_SYS_PCI_TARGET_INIT) */
201 #if defined(CONFIG_PCI)
203 * This routine is called to determine if a pci scan should be
204 * performed. With various hardware environments (especially cPCI and
205 * PPMC) it's insufficient to depend on the state of the arbiter enable
206 * bit in the strap register, or generic host/adapter assumptions.
208 * Rather than hard-code a bad assumption in the general 440 code, the
209 * 440 pci code requires the board to decide at runtime.
211 * Return 0 for adapter mode, non-zero for host (monarch) mode.
213 int is_pci_host(struct pci_controller *hose)
215 return ((in32(CONFIG_SYS_GPIO_BASE + 0x1C) & 0x00000800) == 0);
217 #endif /* defined(CONFIG_PCI) */
221 * Returns 1 if keys pressed to start the power-on long-running tests
222 * Called from board_init_f().
224 int post_hotkeys_pressed(void)
229 void post_word_store(ulong a)
231 volatile ulong *save_addr =
232 (volatile ulong *)(CONFIG_SYS_POST_WORD_ADDR);
237 ulong post_word_load(void)
239 volatile ulong *save_addr =
240 (volatile ulong *)(CONFIG_SYS_POST_WORD_ADDR);