2 * (C) Copyright 2001-2003
3 * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
5 * SPDX-License-Identifier: GPL-2.0+
9 #include <asm/processor.h>
14 DECLARE_GLOBAL_DATA_PTR;
16 extern void lxt971_no_sleep(void);
18 int board_revision(void)
20 unsigned long osrl_reg;
21 unsigned long isr1l_reg;
22 unsigned long tcr_reg;
26 * Get version of HUB405 board from GPIO's
30 * Setup GPIO pin(s) (IRQ6/GPIO23)
32 osrl_reg = in_be32((void *)GPIO0_OSRH);
33 isr1l_reg = in_be32((void *)GPIO0_ISR1H);
34 tcr_reg = in_be32((void *)GPIO0_TCR);
35 out_be32((void *)GPIO0_OSRH, osrl_reg & ~0x00030000); /* output select */
36 out_be32((void *)GPIO0_ISR1H, isr1l_reg | 0x00030000); /* input select */
37 out_be32((void *)GPIO0_TCR, tcr_reg & ~0x00000100); /* select input */
39 udelay(1000); /* wait some time before reading input */
40 value = in_be32((void *)GPIO0_IR) & 0x00000100; /* get config bits */
43 * Restore GPIO settings
45 out_be32((void *)GPIO0_OSRH, osrl_reg); /* output select */
46 out_be32((void *)GPIO0_ISR1H, isr1l_reg); /* input select */
47 out_be32((void *)GPIO0_TCR, tcr_reg); /* enable output driver for outputs */
49 if (value & 0x00000100) {
50 /* Revision 1.1 or 1.2 detected */
59 int board_early_init_f (void)
62 * IRQ 0-15 405GP internally generated; active high; level sensitive
63 * IRQ 16 405GP internally generated; active low; level sensitive
65 * IRQ 25 (EXT IRQ 0) CAN0; active low; level sensitive
66 * IRQ 26 (EXT IRQ 1) SER0 ; active low; level sensitive
67 * IRQ 27 (EXT IRQ 2) SER1; active low; level sensitive
68 * IRQ 28 (EXT IRQ 3) FPGA 0; active low; level sensitive
69 * IRQ 29 (EXT IRQ 4) FPGA 1; active low; level sensitive
70 * IRQ 30 (EXT IRQ 5) PCI INTA; active low; level sensitive
71 * IRQ 31 (EXT IRQ 6) COMPACT FLASH; active high; level sensitive
73 mtdcr(UIC0SR, 0xFFFFFFFF); /* clear all ints */
74 mtdcr(UIC0ER, 0x00000000); /* disable all ints */
75 mtdcr(UIC0CR, 0x00000000); /* set all to be non-critical*/
76 mtdcr(UIC0PR, 0xFFFFFF9F); /* set int polarities */
77 mtdcr(UIC0TR, 0x10000000); /* set int trigger levels */
78 mtdcr(UIC0VCR, 0x00000001); /* set vect base=0,INT0 highest priority*/
79 mtdcr(UIC0SR, 0xFFFFFFFF); /* clear all ints */
82 * EBC Configuration Register: set ready timeout to 512 ebc-clks -> ca. 15 us
84 mtebc (EBC0_CFG, 0xa8400000); /* ebc always driven */
89 #define LED_REG (DUART0_BA + 0x20)
90 int misc_init_r (void)
98 * Enable interrupts in exar duart mcr[3]
100 out_8((void *)(DUART0_BA + 4), 0x08);
101 out_8((void *)(DUART1_BA + 4), 0x08);
102 out_8((void *)(DUART2_BA + 4), 0x08);
103 out_8((void *)(DUART3_BA + 4), 0x08);
106 * Set RS232/RS422 control (RS232 = high on GPIO)
108 val = in_be32((void *)GPIO0_OR);
109 val &= ~(CONFIG_SYS_UART2_RS232 | CONFIG_SYS_UART3_RS232 |
110 CONFIG_SYS_UART4_RS232 | CONFIG_SYS_UART5_RS232);
112 str = getenv("phys0");
113 if (!str || (str && (str[0] == '0')))
114 val |= CONFIG_SYS_UART2_RS232;
116 str = getenv("phys1");
117 if (!str || (str && (str[0] == '0')))
118 val |= CONFIG_SYS_UART3_RS232;
120 str = getenv("phys2");
121 if (!str || (str && (str[0] == '0')))
122 val |= CONFIG_SYS_UART4_RS232;
124 str = getenv("phys3");
125 if (!str || (str && (str[0] == '0')))
126 val |= CONFIG_SYS_UART5_RS232;
128 out_be32((void *)GPIO0_OR, val);
131 * check board type and setup AP power
133 str = getenv("bd_type"); /* this is only set on non prototype hardware */
135 if ((strcmp(str, "swch405") == 0) || ((!strcmp(str, "hub405") && (gd->board_type >= 1)))) {
136 unsigned char led_reg_default = 0;
137 str = getenv("ap_pwr");
138 if (!str || (str && (str[0] == '1')))
139 led_reg_default = 0x04 | 0x02 ; /* U2_LED | AP_PWR */
144 for (flashcnt = 0; flashcnt < 3; flashcnt++) {
146 out_8((void *)LED_REG, led_reg_default);
147 for (delay = 0; delay < 100; delay++)
150 out_8((void *)LED_REG, led_reg_default | 0xf0);
151 for (delay = 0; delay < 50; delay++)
154 out_8((void *)LED_REG, led_reg_default);
159 * Reset external DUARTs
161 out_be32((void *)GPIO0_OR,
162 in_be32((void *)GPIO0_OR) | CONFIG_SYS_DUART_RST); /* set reset to high */
163 udelay(10); /* wait 10us */
164 out_be32((void *)GPIO0_OR,
165 in_be32((void *)GPIO0_OR) & ~CONFIG_SYS_DUART_RST); /* set reset to low */
166 udelay(1000); /* wait 1ms */
169 * Store hardware revision in environment for further processing
171 sprintf(hw_rev, "1.%ld", gd->board_type);
172 setenv("hw_rev", hw_rev);
178 * Check Board Identity:
180 int checkboard (void)
183 int i = getenv_f("serial#", str, sizeof(str));
188 puts ("### No HW ID - assuming HUB405");
193 if (getenv_f("bd_type", str, sizeof(str)) != -1) {
196 puts(" (Missing bd_type!");
199 gd->board_type = board_revision();
200 printf(", Rev 1.%ld)\n", gd->board_type);
203 * Disable sleep mode in LXT971