1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2000-2003
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * modified by Wolfgang Wegner <w.wegner@astro-kom.de> for ASTRO 5373l
6 */
7
8 #include <common.h>
9 #include <serial.h>
10 #include <watchdog.h>
11 #include <command.h>
12 #include <asm/m5329.h>
13 #include <asm/immap_5329.h>
14 #include <asm/io.h>
15
16 /* needed for astro bus: */
17 #include <asm/uart.h>
18 #include "astro.h"
19
20 DECLARE_GLOBAL_DATA_PTR;
21 extern void uart_port_conf(void);
22
checkboard(void)23 int checkboard(void)
24 {
25 puts("Board: ");
26 puts("ASTRO MCF5373L (Urmel) Board\n");
27 return 0;
28 }
29
dram_init(void)30 int dram_init(void)
31 {
32 #if !defined(CONFIG_MONITOR_IS_IN_RAM)
33 sdram_t *sdp = (sdram_t *)(MMAP_SDRAM);
34
35 /*
36 * GPIO configuration for bus should be set correctly from reset,
37 * so we do not care! First, set up address space: at this point,
38 * we should be running from internal SRAM;
39 * so use CONFIG_SYS_SDRAM_BASE as the base address for SDRAM,
40 * and do not care where it is
41 */
42 __raw_writel((CONFIG_SYS_SDRAM_BASE & 0xFFF00000) | 0x00000018,
43 &sdp->cs0);
44 __raw_writel((CONFIG_SYS_SDRAM_BASE & 0xFFF00000) | 0x00000000,
45 &sdp->cs1);
46 /*
47 * I am not sure from the data sheet, but it seems burst length
48 * has to be 8 for the 16 bit data bus we use;
49 * so these values are for BL = 8
50 */
51 __raw_writel(0x33211530, &sdp->cfg1);
52 __raw_writel(0x56570000, &sdp->cfg2);
53 /* send PrechargeALL, REF and IREF remain cleared! */
54 __raw_writel(0xE1462C02, &sdp->ctrl);
55 udelay(1);
56 /* refresh SDRAM twice */
57 __raw_writel(0xE1462C04, &sdp->ctrl);
58 udelay(1);
59 __raw_writel(0xE1462C04, &sdp->ctrl);
60 /* init MR */
61 __raw_writel(0x008D0000, &sdp->mode);
62 /* initialize EMR */
63 __raw_writel(0x80010000, &sdp->mode);
64 /* wait until DLL is locked */
65 udelay(1);
66 /*
67 * enable automatic refresh, lock mode register,
68 * clear iref and ipall
69 */
70 __raw_writel(0x71462C00, &sdp->ctrl);
71 /* Dummy write to start SDRAM */
72 writel(0, CONFIG_SYS_SDRAM_BASE);
73 #endif
74
75 /*
76 * for get_ram_size() to work, both CS areas have to be
77 * configured, i.e. CS1 has to be explicitely disabled, else
78 * probing for memory will cause the SDRAM bus to hang!
79 * (Do not rely on the SDCS register(s) being set to 0x00000000
80 * during reset as stated in the data sheet.)
81 */
82 gd->ram_size = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE,
83 0x80000000 - CONFIG_SYS_SDRAM_BASE);
84
85 return 0;
86 }
87
88 #define UART_BASE MMAP_UART0
rs_serial_init(int port,int baud)89 int rs_serial_init(int port, int baud)
90 {
91 uart_t *uart;
92 u32 counter;
93
94 switch (port) {
95 case 0:
96 uart = (uart_t *)(MMAP_UART0);
97 break;
98 case 1:
99 uart = (uart_t *)(MMAP_UART1);
100 break;
101 case 2:
102 uart = (uart_t *)(MMAP_UART2);
103 break;
104 default:
105 uart = (uart_t *)(MMAP_UART0);
106 }
107
108 uart_port_conf();
109
110 /* write to SICR: SIM2 = uart mode,dcd does not affect rx */
111 writeb(UART_UCR_RESET_RX, &uart->ucr);
112 writeb(UART_UCR_RESET_TX, &uart->ucr);
113 writeb(UART_UCR_RESET_ERROR, &uart->ucr);
114 writeb(UART_UCR_RESET_MR, &uart->ucr);
115 __asm__ ("nop");
116
117 writeb(0, &uart->uimr);
118
119 /* write to CSR: RX/TX baud rate from timers */
120 writeb(UART_UCSR_RCS_SYS_CLK | UART_UCSR_TCS_SYS_CLK, &uart->ucsr);
121
122 writeb(UART_UMR_BC_8 | UART_UMR_PM_NONE, &uart->umr);
123 writeb(UART_UMR_SB_STOP_BITS_1, &uart->umr);
124
125 /* Setting up BaudRate */
126 counter = (u32) (gd->bus_clk / (baud));
127 counter >>= 5;
128
129 /* write to CTUR: divide counter upper byte */
130 writeb((u8) ((counter & 0xff00) >> 8), &uart->ubg1);
131 /* write to CTLR: divide counter lower byte */
132 writeb((u8) (counter & 0x00ff), &uart->ubg2);
133
134 writeb(UART_UCR_RX_ENABLED | UART_UCR_TX_ENABLED, &uart->ucr);
135
136 return 0;
137 }
138
astro_put_char(char ch)139 void astro_put_char(char ch)
140 {
141 uart_t *uart;
142 unsigned long timer;
143
144 uart = (uart_t *)(MMAP_UART0);
145 /*
146 * Wait for last character to go. Timeout of 6ms should
147 * be enough for our lowest baud rate of 2400.
148 */
149 timer = get_timer(0);
150 while (get_timer(timer) < 6) {
151 if (readb(&uart->usr) & UART_USR_TXRDY)
152 break;
153 }
154 writeb(ch, &uart->utb);
155
156 return;
157 }
158
astro_is_char(void)159 int astro_is_char(void)
160 {
161 uart_t *uart;
162
163 uart = (uart_t *)(MMAP_UART0);
164 return readb(&uart->usr) & UART_USR_RXRDY;
165 }
166
astro_get_char(void)167 int astro_get_char(void)
168 {
169 uart_t *uart;
170
171 uart = (uart_t *)(MMAP_UART0);
172 while (!(readb(&uart->usr) & UART_USR_RXRDY)) ;
173 return readb(&uart->urb);
174 }
175
misc_init_r(void)176 int misc_init_r(void)
177 {
178 int retval = 0;
179
180 puts("Configure Xilinx FPGA...");
181 retval = astro5373l_xilinx_load();
182 if (!retval) {
183 puts("failed!\n");
184 return retval;
185 }
186 puts("done\n");
187
188 puts("Configure Altera FPGA...");
189 retval = astro5373l_altera_load();
190 if (!retval) {
191 puts("failed!\n");
192 return retval;
193 }
194 puts("done\n");
195
196 return retval;
197 }
198