2 * Copyright (C) 2003 Travis B. Sawyer <travis.sawyer@sandburst.com>
4 * SPDX-License-Identifier: GPL-2.0+
9 #include <asm/processor.h>
10 #include <spd_sdram.h>
14 DECLARE_GLOBAL_DATA_PTR;
16 int board_early_init_f(void)
21 * Enable GPIO for pins 18 - 24
30 mfsdr(SDR0_PFC0, sdrreg);
31 mtsdr(SDR0_PFC0, (sdrreg & ~SDR0_PFC0_TRE_ENABLE) | 0x00003e00);
32 out32(CONFIG_SYS_GPIO_BASE + 0x018, (USR_LED0 | USR_LED1 | USR_LED2 | USR_LED3));
38 /* Setup the external bus controller/chip selects */
39 mtebc(PB0AP, 0x04055200); /* 16MB Strata FLASH */
40 mtebc(PB0CR, 0xff098000); /* BAS=0xff0 16MB R/W 8-bit */
41 mtebc(PB1AP, 0x04055200); /* 512KB Socketed AMD FLASH */
42 mtebc(PB1CR, 0xfe018000); /* BAS=0xfe0 1MB R/W 8-bit */
43 mtebc(PB6AP, 0x05006400); /* 32-64MB AMD MirrorBit FLASH */
44 mtebc(PB6CR, 0xf00da000); /* BAS=0xf00 64MB R/W i6-bit */
45 mtebc(PB7AP, 0x05006400); /* 32-64MB AMD MirrorBit FLASH */
46 mtebc(PB7CR, 0xf40da000); /* BAS=0xf40 64MB R/W 16-bit */
49 * Setup the interrupt controller polarities, triggers, etc.
51 * Because of the interrupt handling rework to handle 440GX interrupts
52 * with the common code, we needed to change names of the UIC registers.
53 * Here the new relationship:
55 * U-Boot name 440GX name
56 * -----------------------
62 mtdcr(UIC1SR, 0xffffffff); /* clear all */
63 mtdcr(UIC1ER, 0x00000000); /* disable all */
64 mtdcr(UIC1CR, 0x00000003); /* SMI & UIC1 crit are critical */
65 mtdcr(UIC1PR, 0xfffffe00); /* per ref-board manual */
66 mtdcr(UIC1TR, 0x01c00000); /* per ref-board manual */
67 mtdcr(UIC1VR, 0x00000001); /* int31 highest, base=0x000 */
68 mtdcr(UIC1SR, 0xffffffff); /* clear all */
70 mtdcr(UIC2SR, 0xffffffff); /* clear all */
71 mtdcr(UIC2ER, 0x00000000); /* disable all */
72 mtdcr(UIC2CR, 0x00000000); /* all non-critical */
73 mtdcr(UIC2PR, 0xffffc0ff); /* per ref-board manual */
74 mtdcr(UIC2TR, 0x00ff8000); /* per ref-board manual */
75 mtdcr(UIC2VR, 0x00000001); /* int31 highest, base=0x000 */
76 mtdcr(UIC2SR, 0xffffffff); /* clear all */
78 mtdcr(UIC3SR, 0xffffffff); /* clear all */
79 mtdcr(UIC3ER, 0x00000000); /* disable all */
80 mtdcr(UIC3CR, 0x00000000); /* all non-critical */
81 mtdcr(UIC3PR, 0xffffffff); /* per ref-board manual */
82 mtdcr(UIC3TR, 0x00ff8c0f); /* per ref-board manual */
83 mtdcr(UIC3VR, 0x00000001); /* int31 highest, base=0x000 */
84 mtdcr(UIC3SR, 0xffffffff); /* clear all */
86 mtdcr(UIC0SR, 0xfc000000); /* clear all */
87 mtdcr(UIC0ER, 0x00000000); /* disable all */
88 mtdcr(UIC0CR, 0x00000000); /* all non-critical */
89 mtdcr(UIC0PR, 0xfc000000); /* */
90 mtdcr(UIC0TR, 0x00000000); /* */
91 mtdcr(UIC0VR, 0x00000001); /* */
103 printf("Board: X-ES %s PMC SBC\n", CONFIG_SYS_BOARD_NAME);
105 i = getenv_f("board_rev", buf, sizeof(buf));
107 printf("Rev %s, ", buf);
108 i = getenv_f("serial#", buf, sizeof(buf));
110 printf("Serial# %s, ", buf);
111 i = getenv_f("board_cfg", buf, sizeof(buf));
113 printf("Cfg %s", buf);
121 gd->ram_size = spd_sdram();
127 * Override weak pci_pre_init()
129 * This routine is called just prior to registering the hose and gives
130 * the board the opportunity to check things. Returning a value of zero
131 * indicates that things are bad & PCI initialization should be aborted.
133 * Different boards may wish to customize the pci controller structure
134 * (add regions, override default access routines, etc) or perform
135 * certain pre-initialization actions.
137 #if defined(CONFIG_PCI)
138 int pci_pre_init(struct pci_controller * hose)
142 /* See if we're supposed to setup the pci */
143 mfsdr(SDR0_SDSTP1, strap);
144 if ((strap & 0x00010000) == 0)
147 #if defined(CONFIG_SYS_PCI_FORCE_PCI_CONV)
148 /* Setup System Device Register PCIL0_XCR */
149 mfsdr(SDR0_XCR, strap);
151 mtsdr(SDR0_XCR, strap);
156 #endif /* defined(CONFIG_PCI) */
158 #if defined(CONFIG_PCI)
160 * Override weak is_pci_host()
162 * This routine is called to determine if a pci scan should be
163 * performed. With various hardware environments (especially cPCI and
164 * PPMC) it's insufficient to depend on the state of the arbiter enable
165 * bit in the strap register, or generic host/adapter assumptions.
167 * Rather than hard-code a bad assumption in the general 440 code, the
168 * 440 pci code requires the board to decide at runtime.
170 * Return 0 for adapter mode, non-zero for host (monarch) mode.
172 int is_pci_host(struct pci_controller *hose)
174 return ((in32(CONFIG_SYS_GPIO_BASE + 0x1C) & 0x00000800) == 0);
176 #endif /* defined(CONFIG_PCI) */
180 * Returns 1 if keys pressed to start the power-on long-running tests
181 * Called from board_init_f().
183 int post_hotkeys_pressed(void)