Merge git://git.denx.de/u-boot-socfpga
[platform/kernel/u-boot.git] / board / esd / meesc / meesc.c
1 /*
2  * (C) Copyright 2007-2008
3  * Stelian Pop <stelian@popies.net>
4  * Lead Tech Design <www.leadtechdesign.com>
5  *
6  * (C) Copyright 2009-2015
7  * Daniel Gorsulowski <daniel.gorsulowski@esd.eu>
8  * esd electronic system design gmbh <www.esd.eu>
9  *
10  * SPDX-License-Identifier:     GPL-2.0+
11  */
12
13 #include <common.h>
14 #include <asm/io.h>
15 #include <asm/gpio.h>
16 #include <asm/arch/at91sam9_smc.h>
17 #include <asm/arch/at91_common.h>
18 #include <asm/arch/at91_pmc.h>
19 #include <asm/arch/at91_rstc.h>
20 #include <asm/arch/at91_matrix.h>
21 #include <asm/arch/at91_pio.h>
22 #include <asm/arch/clk.h>
23 #include <netdev.h>
24
25 DECLARE_GLOBAL_DATA_PTR;
26
27 /*
28  * Miscelaneous platform dependent initialisations
29  */
30
31 #ifdef CONFIG_REVISION_TAG
32 static int hw_rev = -1; /* hardware revision */
33
34 int get_hw_rev(void)
35 {
36         if (hw_rev >= 0)
37                 return hw_rev;
38
39         hw_rev = at91_get_pio_value(AT91_PIO_PORTB, 19);
40         hw_rev |= at91_get_pio_value(AT91_PIO_PORTB, 20) << 1;
41         hw_rev |= at91_get_pio_value(AT91_PIO_PORTB, 21) << 2;
42         hw_rev |= at91_get_pio_value(AT91_PIO_PORTB, 22) << 3;
43
44         if (hw_rev == 15)
45                 hw_rev = 0;
46
47         return hw_rev;
48 }
49 #endif /* CONFIG_REVISION_TAG */
50
51 #ifdef CONFIG_CMD_NAND
52 static void meesc_nand_hw_init(void)
53 {
54         unsigned long csa;
55         at91_smc_t      *smc    = (at91_smc_t *) ATMEL_BASE_SMC0;
56         at91_matrix_t   *matrix = (at91_matrix_t *) ATMEL_BASE_MATRIX;
57
58         /* Enable CS3 */
59         csa = readl(&matrix->csa[0]) | AT91_MATRIX_CSA_EBI_CS3A;
60         writel(csa, &matrix->csa[0]);
61
62         /* Configure SMC CS3 for NAND/SmartMedia */
63         writel(AT91_SMC_SETUP_NWE(1) | AT91_SMC_SETUP_NCS_WR(1) |
64                 AT91_SMC_SETUP_NRD(2) | AT91_SMC_SETUP_NCS_RD(2),
65                 &smc->cs[3].setup);
66
67         writel(AT91_SMC_PULSE_NWE(3) | AT91_SMC_PULSE_NCS_WR(3) |
68                 AT91_SMC_PULSE_NRD(3) | AT91_SMC_PULSE_NCS_RD(3),
69                 &smc->cs[3].pulse);
70
71         writel(AT91_SMC_CYCLE_NWE(6) | AT91_SMC_CYCLE_NRD(6),
72                 &smc->cs[3].cycle);
73         writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
74                 AT91_SMC_MODE_EXNW_DISABLE |
75                 AT91_SMC_MODE_DBW_8 |
76                 AT91_SMC_MODE_TDF_CYCLE(12),
77                 &smc->cs[3].mode);
78
79         /* Configure RDY/BSY */
80         gpio_direction_input(CONFIG_SYS_NAND_READY_PIN);
81
82         /* Enable NandFlash */
83         gpio_direction_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
84 }
85 #endif /* CONFIG_CMD_NAND */
86
87 #ifdef CONFIG_MACB
88 static void meesc_macb_hw_init(void)
89 {
90         at91_pmc_t      *pmc    = (at91_pmc_t *) ATMEL_BASE_PMC;
91         /* Enable clock */
92         writel(1 << ATMEL_ID_EMAC, &pmc->pcer);
93         at91_macb_hw_init();
94 }
95 #endif
96
97 /*
98  * Static memory controller initialization to enable Beckhoff ET1100 EtherCAT
99  * controller debugging
100  * The ET1100 is located at physical address 0x70000000
101  * Its process memory is located at physical address 0x70001000
102  */
103 static void meesc_ethercat_hw_init(void)
104 {
105         at91_smc_t      *smc1   = (at91_smc_t *) ATMEL_BASE_SMC1;
106
107         /* Configure SMC EBI1_CS0 for EtherCAT */
108         writel(AT91_SMC_SETUP_NWE(0) | AT91_SMC_SETUP_NCS_WR(0) |
109                 AT91_SMC_SETUP_NRD(0) | AT91_SMC_SETUP_NCS_RD(0),
110                 &smc1->cs[0].setup);
111         writel(AT91_SMC_PULSE_NWE(4) | AT91_SMC_PULSE_NCS_WR(9) |
112                 AT91_SMC_PULSE_NRD(5) | AT91_SMC_PULSE_NCS_RD(9),
113                 &smc1->cs[0].pulse);
114         writel(AT91_SMC_CYCLE_NWE(10) | AT91_SMC_CYCLE_NRD(6),
115                 &smc1->cs[0].cycle);
116         /*
117          * Configure behavior at external wait signal, byte-select mode, 16 bit
118          * data bus width, none data float wait states and TDF optimization
119          */
120         writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_EXNW_READY |
121                 AT91_SMC_MODE_DBW_16 | AT91_SMC_MODE_TDF_CYCLE(0) |
122                 AT91_SMC_MODE_TDF, &smc1->cs[0].mode);
123
124         /* Configure RDY/BSY */
125         at91_set_b_periph(AT91_PIO_PORTE, 20, 0);       /* EBI1_NWAIT */
126 }
127
128 int dram_init(void)
129 {
130         /* dram_init must store complete ramsize in gd->ram_size */
131         gd->ram_size = get_ram_size((void *)PHYS_SDRAM,
132                                 PHYS_SDRAM_SIZE);
133         return 0;
134 }
135
136 void dram_init_banksize(void)
137 {
138         gd->bd->bi_dram[0].start = PHYS_SDRAM;
139         gd->bd->bi_dram[0].size = PHYS_SDRAM_SIZE;
140 }
141
142 int board_eth_init(bd_t *bis)
143 {
144         int rc = 0;
145 #ifdef CONFIG_MACB
146         rc = macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC, 0x00);
147 #endif
148         return rc;
149 }
150
151 #ifdef CONFIG_DISPLAY_BOARDINFO
152 int checkboard(void)
153 {
154         char str[32];
155         u_char hw_type; /* hardware type */
156
157         /* read the "Type" register of the ET1100 controller */
158         hw_type = readb(CONFIG_ET1100_BASE);
159
160         switch (hw_type) {
161         case 0x11:
162         case 0x3F:
163                 /* ET1100 present, arch number of MEESC-Board */
164                 gd->bd->bi_arch_number = MACH_TYPE_MEESC;
165                 puts("Board: CAN-EtherCAT Gateway");
166                 break;
167         case 0xFF:
168                 /* no ET1100 present, arch number of EtherCAN/2-Board */
169                 gd->bd->bi_arch_number = MACH_TYPE_ETHERCAN2;
170                 puts("Board: EtherCAN/2 Gateway");
171                 /* switch on LED1D */
172                 at91_set_pio_output(AT91_PIO_PORTB, 12, 1);
173                 break;
174         default:
175                 /* assume, no ET1100 present, arch number of EtherCAN/2-Board */
176                 gd->bd->bi_arch_number = MACH_TYPE_ETHERCAN2;
177                 printf("ERROR! Read invalid hw_type: %02X\n", hw_type);
178                 puts("Board: EtherCAN/2 Gateway");
179                 break;
180         }
181         if (getenv_f("serial#", str, sizeof(str)) > 0) {
182                 puts(", serial# ");
183                 puts(str);
184         }
185 #ifdef CONFIG_REVISION_TAG
186         printf("\nHardware-revision: 1.%d\n", get_hw_rev());
187 #endif
188         printf("Mach-type: %lu\n", gd->bd->bi_arch_number);
189         return 0;
190 }
191 #endif /* CONFIG_DISPLAY_BOARDINFO */
192
193 #ifdef CONFIG_SERIAL_TAG
194 void get_board_serial(struct tag_serialnr *serialnr)
195 {
196         char *str;
197
198         char *serial = getenv("serial#");
199         if (serial) {
200                 str = strchr(serial, '_');
201                 if (str && (strlen(str) >= 4)) {
202                         serialnr->high = (*(str + 1) << 8) | *(str + 2);
203                         serialnr->low = simple_strtoul(str + 3, NULL, 16);
204                 }
205         } else {
206                 serialnr->high = 0;
207                 serialnr->low = 0;
208         }
209 }
210 #endif
211
212 #ifdef CONFIG_REVISION_TAG
213 u32 get_board_rev(void)
214 {
215         return hw_rev | 0x100;
216 }
217 #endif
218
219 #ifdef CONFIG_MISC_INIT_R
220 int misc_init_r(void)
221 {
222         char            *str;
223         char            buf[32];
224         at91_pmc_t      *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
225
226         /*
227          * Normally the processor clock has a divisor of 2.
228          * In some cases this this needs to be set to 4.
229          * Check the user has set environment mdiv to 4 to change the divisor.
230          */
231         if ((str = getenv("mdiv")) && (strcmp(str, "4") == 0)) {
232                 writel((readl(&pmc->mckr) & ~AT91_PMC_MDIV) |
233                         AT91SAM9_PMC_MDIV_4, &pmc->mckr);
234                 at91_clock_init(CONFIG_SYS_AT91_MAIN_CLOCK);
235                 serial_setbrg();
236                 /* Notify the user that the clock is not default */
237                 printf("Setting master clock to %s MHz\n",
238                         strmhz(buf, get_mck_clk_rate()));
239         }
240
241         return 0;
242 }
243 #endif /* CONFIG_MISC_INIT_R */
244
245 int board_early_init_f(void)
246 {
247         at91_pmc_t      *pmc    = (at91_pmc_t *) ATMEL_BASE_PMC;
248
249         /* enable all clocks */
250         writel((1 << ATMEL_ID_PIOA) | (1 << ATMEL_ID_PIOB) |
251                 (1 << ATMEL_ID_PIOCDE) | (1 << ATMEL_ID_UHP),
252                 &pmc->pcer);
253
254         at91_seriald_hw_init();
255
256         return 0;
257 }
258
259 int board_init(void)
260 {
261         /* initialize ET1100 Controller */
262         meesc_ethercat_hw_init();
263
264         /* adress of boot parameters */
265         gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
266
267 #ifdef CONFIG_CMD_NAND
268         meesc_nand_hw_init();
269 #endif
270 #ifdef CONFIG_HAS_DATAFLASH
271         at91_spi0_hw_init(1 << 0);
272 #endif
273 #ifdef CONFIG_MACB
274         meesc_macb_hw_init();
275 #endif
276 #ifdef CONFIG_AT91_CAN
277         at91_can_hw_init();
278 #endif
279 #ifdef CONFIG_USB_OHCI_NEW
280         at91_uhp_hw_init();
281 #endif
282         return 0;
283 }