1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * (C) Copyright 2010
4 * ISEE 2007 SL, <www.iseebcn.com>
5 */
6#include <common.h>
7#include <env.h>
8#include <init.h>
9#include <malloc.h>
10#include <net.h>
11#include <status_led.h>
12#include <dm.h>
13#include <ns16550.h>
14#include <twl4030.h>
15#include <netdev.h>
16#include <spl.h>
17#include <asm/gpio.h>
18#include <asm/io.h>
19#include <asm/arch/mem.h>
20#include <asm/arch/mmc_host_def.h>
21#include <asm/arch/mux.h>
22#include <asm/arch/sys_proto.h>
23#include <linux/delay.h>
24#include <linux/mtd/mtd.h>
25#include <linux/mtd/rawnand.h>
26#include <linux/mtd/onenand.h>
27#include <jffs2/load_kernel.h>
28#include <mtd_node.h>
29#include <fdt_support.h>
30#include "igep00x0.h"
31
32static const struct ns16550_plat igep_serial = {
33	.base = OMAP34XX_UART3,
34	.reg_shift = 2,
35	.clock = V_NS16550_CLK,
36	.fcr = UART_FCR_DEFVAL,
37};
38
39U_BOOT_DRVINFO(igep_uart) = {
40	"ns16550_serial",
41	&igep_serial
42};
43
44/*
45 * Routine: get_board_revision
46 * Description: GPIO_28 and GPIO_129 are used to read board and revision from
47 * IGEP00x0 boards. First of all, it is necessary to reset USB transceiver from
48 * IGEP0030 in order to read GPIO_IGEP00X0_BOARD_DETECTION correctly, because
49 * this functionality is shared by USB HOST.
50 * Once USB reset is applied, U-Boot configures these pins as input pullup to
51 * detect board and revision:
52 * IGEP0020-RF = 0b00
53 * IGEP0020-RC = 0b01
54 * IGEP0030-RG = 0b10
55 * IGEP0030-RE = 0b11
56 */
57static int get_board_revision(void)
58{
59	int revision;
60
61	gpio_request(IGEP0030_USB_TRANSCEIVER_RESET,
62				"igep0030_usb_transceiver_reset");
63	gpio_direction_output(IGEP0030_USB_TRANSCEIVER_RESET, 0);
64
65	gpio_request(GPIO_IGEP00X0_BOARD_DETECTION, "igep00x0_board_detection");
66	gpio_direction_input(GPIO_IGEP00X0_BOARD_DETECTION);
67	revision = 2 * gpio_get_value(GPIO_IGEP00X0_BOARD_DETECTION);
68	gpio_free(GPIO_IGEP00X0_BOARD_DETECTION);
69
70	gpio_request(GPIO_IGEP00X0_REVISION_DETECTION,
71				"igep00x0_revision_detection");
72	gpio_direction_input(GPIO_IGEP00X0_REVISION_DETECTION);
73	revision = revision + gpio_get_value(GPIO_IGEP00X0_REVISION_DETECTION);
74	gpio_free(GPIO_IGEP00X0_REVISION_DETECTION);
75
76	gpio_free(IGEP0030_USB_TRANSCEIVER_RESET);
77
78	return revision;
79}
80
81int onenand_board_init(struct mtd_info *mtd)
82{
83	if (gpmc_cs0_flash == MTD_DEV_TYPE_ONENAND) {
84		struct onenand_chip *this = mtd->priv;
85		this->base = (void *)CFG_SYS_ONENAND_BASE;
86		return 0;
87	}
88	return 1;
89}
90
91#ifdef CONFIG_OF_BOARD_SETUP
92static int ft_enable_by_compatible(void *blob, char *compat, int enable)
93{
94	int off = fdt_node_offset_by_compatible(blob, -1, compat);
95	if (off < 0)
96		return off;
97
98	if (enable)
99		fdt_status_okay(blob, off);
100	else
101		fdt_status_disabled(blob, off);
102
103	return 0;
104}
105
106int ft_board_setup(void *blob, struct bd_info *bd)
107{
108#ifdef CONFIG_FDT_FIXUP_PARTITIONS
109	static const struct node_info nodes[] = {
110		{ "ti,omap2-nand", MTD_DEV_TYPE_NAND, },
111		{ "ti,omap2-onenand", MTD_DEV_TYPE_ONENAND, },
112	};
113
114	fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes));
115#endif
116	ft_enable_by_compatible(blob, "ti,omap2-nand",
117				gpmc_cs0_flash == MTD_DEV_TYPE_NAND);
118	ft_enable_by_compatible(blob, "ti,omap2-onenand",
119				gpmc_cs0_flash == MTD_DEV_TYPE_ONENAND);
120
121	return 0;
122}
123#endif
124
125void set_led(void)
126{
127	switch (get_board_revision()) {
128	case 0:
129	case 1:
130		gpio_request(IGEP0020_GPIO_LED, "igep0020_gpio_led");
131		gpio_direction_output(IGEP0020_GPIO_LED, 1);
132		break;
133	case 2:
134	case 3:
135		gpio_request(IGEP0030_GPIO_LED, "igep0030_gpio_led");
136		gpio_direction_output(IGEP0030_GPIO_LED, 0);
137		break;
138	default:
139		/* Should not happen... */
140		break;
141	}
142}
143
144void set_boardname(void)
145{
146	char rev[5] = { 'F','C','G','E', };
147	int i = get_board_revision();
148
149	rev[i+1] = 0;
150	env_set("board_rev", rev + i);
151	env_set("board_name", i < 2 ? "igep0020" : "igep0030");
152}
153
154/*
155 * Routine: misc_init_r
156 * Description: Configure board specific parts
157 */
158int misc_init_r(void)
159{
160	t2_t *t2_base = (t2_t *)T2_BASE;
161	u32 pbias_lite;
162
163	twl4030_power_init();
164
165	/* set VSIM to 1.8V */
166	twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VSIM_DEDICATED,
167				TWL4030_PM_RECEIVER_VSIM_VSEL_18,
168				TWL4030_PM_RECEIVER_VSIM_DEV_GRP,
169				TWL4030_PM_RECEIVER_DEV_GRP_P1);
170
171	/* set up dual-voltage GPIOs to 1.8V */
172	pbias_lite = readl(&t2_base->pbias_lite);
173	pbias_lite &= ~PBIASLITEVMODE1;
174	pbias_lite |= PBIASLITEPWRDNZ1;
175	writel(pbias_lite, &t2_base->pbias_lite);
176	if (get_cpu_family() == CPU_OMAP36XX)
177		writel(readl(OMAP34XX_CTRL_WKUP_CTRL) |
178					 OMAP34XX_CTRL_WKUP_CTRL_GPIO_IO_PWRDNZ,
179					 OMAP34XX_CTRL_WKUP_CTRL);
180
181	omap_die_id_display();
182
183	set_led();
184
185	set_boardname();
186
187	return 0;
188}
189
190void board_mtdparts_default(const char **mtdids, const char **mtdparts)
191{
192	struct mtd_info *mtd = get_mtd_device(NULL, 0);
193	if (mtd) {
194		static char ids[24];
195		static char parts[48];
196		const char *linux_name = "omap2-nand";
197		if (strncmp(mtd->name, "onenand0", 8) == 0)
198			linux_name = "omap2-onenand";
199		snprintf(ids, sizeof(ids), "%s=%s", mtd->name, linux_name);
200		snprintf(parts, sizeof(parts), "mtdparts=%s:%dk(SPL),-(UBI)",
201		         linux_name, 4 * mtd->erasesize >> 10);
202		*mtdids = ids;
203		*mtdparts = parts;
204	}
205}
206