1 /*
2 * (C) Heiko Schocher, DENX Software Engineering, hs@denx.de.
3 * Based on:
4 * U-Boot:board/davinci/da8xxevm/da850evm.c
5 *
6 * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
7 *
8 * Based on da830evm.c. Original Copyrights follow:
9 *
10 * Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. <nick.thompson@gefanuc.com>
11 * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
12 *
13 * SPDX-License-Identifier: GPL-2.0+
14 */
15
16 #include <common.h>
17 #include <i2c.h>
18 #include <net.h>
19 #include <netdev.h>
20 #include <spi.h>
21 #include <spi_flash.h>
22 #include <asm/arch/hardware.h>
23 #include <asm/ti-common/davinci_nand.h>
24 #include <asm/arch/emac_defs.h>
25 #include <asm/arch/pinmux_defs.h>
26 #include <asm/io.h>
27 #include <asm/arch/davinci_misc.h>
28 #include <asm/errno.h>
29 #include <asm/gpio.h>
30 #include <hwconfig.h>
31 #include <bootstage.h>
32
33 DECLARE_GLOBAL_DATA_PTR;
34
35 #ifdef CONFIG_DRIVER_TI_EMAC
36 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
37 #define HAS_RMII 1
38 #else
39 #define HAS_RMII 0
40 #endif
41 #endif /* CONFIG_DRIVER_TI_EMAC */
42
dsp_lpsc_on(unsigned domain,unsigned int id)43 void dsp_lpsc_on(unsigned domain, unsigned int id)
44 {
45 dv_reg_p mdstat, mdctl, ptstat, ptcmd;
46 struct davinci_psc_regs *psc_regs;
47
48 psc_regs = davinci_psc0_regs;
49 mdstat = &psc_regs->psc0.mdstat[id];
50 mdctl = &psc_regs->psc0.mdctl[id];
51 ptstat = &psc_regs->ptstat;
52 ptcmd = &psc_regs->ptcmd;
53
54 while (*ptstat & (0x1 << domain))
55 ;
56
57 if ((*mdstat & 0x1f) == 0x03)
58 return; /* Already on and enabled */
59
60 *mdctl |= 0x03;
61
62 *ptcmd = 0x1 << domain;
63
64 while (*ptstat & (0x1 << domain))
65 ;
66 while ((*mdstat & 0x1f) != 0x03)
67 ; /* Probably an overkill... */
68 }
69
dspwake(void)70 static void dspwake(void)
71 {
72 unsigned *resetvect = (unsigned *)DAVINCI_L3CBARAM_BASE;
73 u32 val;
74
75 /* if the device is ARM only, return */
76 if ((readl(CHIP_REV_ID_REG) & 0x3f) == 0x10)
77 return;
78
79 if (hwconfig_subarg_cmp_f("dsp", "wake", "no", NULL))
80 return;
81
82 *resetvect++ = 0x1E000; /* DSP Idle */
83 /* clear out the next 10 words as NOP */
84 memset(resetvect, 0, sizeof(unsigned) * 10);
85
86 /* setup the DSP reset vector */
87 writel(DAVINCI_L3CBARAM_BASE, HOST1CFG);
88
89 dsp_lpsc_on(1, DAVINCI_LPSC_GEM);
90 val = readl(PSC0_MDCTL + (15 * 4));
91 val |= 0x100;
92 writel(val, (PSC0_MDCTL + (15 * 4)));
93 }
94
misc_init_r(void)95 int misc_init_r(void)
96 {
97 dspwake();
98 return 0;
99 }
100
101 static const struct pinmux_config gpio_pins[] = {
102 /* GP7[14] selects bootmode*/
103 { pinmux(16), 8, 3 }, /* GP7[14] */
104 };
105
106 const struct pinmux_resource pinmuxes[] = {
107 #ifdef CONFIG_DRIVER_TI_EMAC
108 PINMUX_ITEM(emac_pins_mdio),
109 #ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
110 PINMUX_ITEM(emac_pins_rmii),
111 #else
112 PINMUX_ITEM(emac_pins_mii),
113 #endif
114 #endif
115 PINMUX_ITEM(uart2_pins_txrx),
116 PINMUX_ITEM(uart2_pins_rtscts),
117 PINMUX_ITEM(uart0_pins_txrx),
118 PINMUX_ITEM(uart0_pins_rtscts),
119 #ifdef CONFIG_NAND_DAVINCI
120 PINMUX_ITEM(emifa_pins_cs3),
121 PINMUX_ITEM(emifa_pins_nand),
122 #endif
123 PINMUX_ITEM(gpio_pins),
124 };
125
126 const int pinmuxes_size = ARRAY_SIZE(pinmuxes);
127
128 const struct lpsc_resource lpsc[] = {
129 { DAVINCI_LPSC_AEMIF }, /* NAND, NOR */
130 { DAVINCI_LPSC_EMAC }, /* image download */
131 { DAVINCI_LPSC_UART2 }, /* console */
132 { DAVINCI_LPSC_UART0 }, /* console */
133 { DAVINCI_LPSC_GPIO },
134 };
135
136 const int lpsc_size = ARRAY_SIZE(lpsc);
137
138 #ifndef CONFIG_DA850_EVM_MAX_CPU_CLK
139 #define CONFIG_DA850_EVM_MAX_CPU_CLK 300000000
140 #endif
141
142 #define REV_AM18X_EVM 0x100
143
144 /*
145 * get_board_rev() - setup to pass kernel board revision information
146 * Returns:
147 * bit[0-3] Maximum cpu clock rate supported by onboard SoC
148 * 0000b - 300 MHz
149 * 0001b - 372 MHz
150 * 0010b - 408 MHz
151 * 0011b - 456 MHz
152 */
get_board_rev(void)153 u32 get_board_rev(void)
154 {
155 char *s;
156 u32 maxcpuclk = CONFIG_DA850_EVM_MAX_CPU_CLK;
157 u32 rev = 0;
158
159 s = getenv("maxcpuclk");
160 if (s)
161 maxcpuclk = simple_strtoul(s, NULL, 10);
162
163 if (maxcpuclk >= 456000000)
164 rev = 3;
165 else if (maxcpuclk >= 408000000)
166 rev = 2;
167 else if (maxcpuclk >= 372000000)
168 rev = 1;
169 #ifdef CONFIG_DA850_AM18X_EVM
170 rev |= REV_AM18X_EVM;
171 #endif
172 return rev;
173 }
174
board_early_init_f(void)175 int board_early_init_f(void)
176 {
177 /*
178 * Power on required peripherals
179 * ARM does not have access by default to PSC0 and PSC1
180 * assuming here that the DSP bootloader has set the IOPU
181 * such that PSC access is available to ARM
182 */
183 if (da8xx_configure_lpsc_items(lpsc, ARRAY_SIZE(lpsc)))
184 return 1;
185
186 return 0;
187 }
188
board_init(void)189 int board_init(void)
190 {
191 #ifndef CONFIG_USE_IRQ
192 irq_init();
193 #endif
194
195 /* arch number of the board */
196 gd->bd->bi_arch_number = MACH_TYPE_DAVINCI_DA850_EVM;
197
198 /* address of boot parameters */
199 gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
200
201 /* setup the SUSPSRC for ARM to control emulation suspend */
202 writel(readl(&davinci_syscfg_regs->suspsrc) &
203 ~(DAVINCI_SYSCFG_SUSPSRC_EMAC | DAVINCI_SYSCFG_SUSPSRC_I2C |
204 DAVINCI_SYSCFG_SUSPSRC_SPI1 | DAVINCI_SYSCFG_SUSPSRC_TIMER0 |
205 DAVINCI_SYSCFG_SUSPSRC_UART0),
206 &davinci_syscfg_regs->suspsrc);
207
208 /* configure pinmux settings */
209 if (davinci_configure_pin_mux_items(pinmuxes, ARRAY_SIZE(pinmuxes)))
210 return 1;
211
212 #ifdef CONFIG_DRIVER_TI_EMAC
213 davinci_emac_mii_mode_sel(HAS_RMII);
214 #endif /* CONFIG_DRIVER_TI_EMAC */
215
216 /* enable the console UART */
217 writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST |
218 DAVINCI_UART_PWREMU_MGMT_UTRST),
219 #if (CONFIG_SYS_NS16550_COM1 == DAVINCI_UART0_BASE)
220 &davinci_uart0_ctrl_regs->pwremu_mgmt);
221 #else
222 &davinci_uart2_ctrl_regs->pwremu_mgmt);
223 #endif
224 return 0;
225 }
226
227 #ifdef CONFIG_DRIVER_TI_EMAC
228 /*
229 * Initializes on-board ethernet controllers.
230 */
board_eth_init(bd_t * bis)231 int board_eth_init(bd_t *bis)
232 {
233 if (!davinci_emac_initialize()) {
234 printf("Error: Ethernet init failed!\n");
235 return -1;
236 }
237
238 return 0;
239 }
240 #endif /* CONFIG_DRIVER_TI_EMAC */
241
init_led(int gpio,char * name,int val)242 static int init_led(int gpio, char *name, int val)
243 {
244 int ret;
245
246 ret = gpio_request(gpio, name);
247 if (ret)
248 return -1;
249 ret = gpio_direction_output(gpio, val);
250 if (ret)
251 return -1;
252
253 return gpio;
254 }
255
256 #define LED_ON 0
257 #define LED_OFF 1
258
259 #if !defined(CONFIG_SPL_BUILD)
260 #ifdef CONFIG_SHOW_BOOT_PROGRESS
show_boot_progress(int status)261 void show_boot_progress(int status)
262 {
263 static int red;
264 static int green;
265
266 if (red == 0)
267 red = init_led(CONFIG_IPAM390_GPIO_LED_RED, "red", LED_ON);
268 if (red != CONFIG_IPAM390_GPIO_LED_RED)
269 return;
270 if (green == 0)
271 green = init_led(CONFIG_IPAM390_GPIO_LED_GREEN, "green",
272 LED_OFF);
273 if (green != CONFIG_IPAM390_GPIO_LED_GREEN)
274 return;
275
276 switch (status) {
277 case BOOTSTAGE_ID_RUN_OS:
278 /*
279 * set normal state
280 * LED Red : on
281 * LED green: off
282 */
283 gpio_set_value(red, LED_ON);
284 gpio_set_value(green, LED_OFF);
285 break;
286 case BOOTSTAGE_ID_MAIN_LOOP:
287 /*
288 * U-Boot operation
289 * LED Red : on
290 * LED green: on
291 */
292 gpio_set_value(red, LED_ON);
293 gpio_set_value(green, LED_ON);
294 break;
295 }
296 }
297 #endif
298 #endif
299
300 #ifdef CONFIG_SPL_OS_BOOT
spl_start_uboot(void)301 int spl_start_uboot(void)
302 {
303 int ret;
304 int bootmode = 0;
305
306 /*
307 * GP7[14] selects bootmode:
308 * 1: boot linux
309 * 0: boot u-boot
310 * if error accessing gpio boot U-Boot
311 *
312 * SPL bootmode
313 * 0: boot linux
314 * 1: boot u-boot
315 */
316 ret = gpio_request(CONFIG_IPAM390_GPIO_BOOTMODE , "bootmode");
317 if (ret)
318 bootmode = 1;
319 if (!bootmode) {
320 ret = gpio_direction_input(CONFIG_IPAM390_GPIO_BOOTMODE);
321 if (ret)
322 bootmode = 1;
323 }
324 if (!bootmode)
325 ret = gpio_get_value(CONFIG_IPAM390_GPIO_BOOTMODE);
326 if (!bootmode)
327 if (ret == 0)
328 bootmode = 1;
329 /*
330 * LED red : on
331 * LED green: off
332 */
333 init_led(CONFIG_IPAM390_GPIO_LED_RED, "red", LED_ON);
334 init_led(CONFIG_IPAM390_GPIO_LED_GREEN, "green", LED_OFF);
335 return bootmode;
336 }
337 #endif
338