2 * arch/arm/mach-ep93xx/ts72xx.c
3 * Technologic Systems TS72xx SBC support.
5 * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or (at
10 * your option) any later version.
13 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/platform_device.h>
19 #include <linux/m48t86.h>
20 #include <linux/mtd/nand.h>
21 #include <linux/mtd/partitions.h>
23 #include <mach/hardware.h>
24 #include <mach/ts72xx.h>
26 #include <asm/hardware/vic.h>
27 #include <asm/mach-types.h>
28 #include <asm/mach/map.h>
29 #include <asm/mach/arch.h>
33 static struct map_desc ts72xx_io_desc
[] __initdata
= {
35 .virtual = TS72XX_MODEL_VIRT_BASE
,
36 .pfn
= __phys_to_pfn(TS72XX_MODEL_PHYS_BASE
),
37 .length
= TS72XX_MODEL_SIZE
,
40 .virtual = TS72XX_OPTIONS_VIRT_BASE
,
41 .pfn
= __phys_to_pfn(TS72XX_OPTIONS_PHYS_BASE
),
42 .length
= TS72XX_OPTIONS_SIZE
,
45 .virtual = TS72XX_OPTIONS2_VIRT_BASE
,
46 .pfn
= __phys_to_pfn(TS72XX_OPTIONS2_PHYS_BASE
),
47 .length
= TS72XX_OPTIONS2_SIZE
,
50 .virtual = TS72XX_RTC_INDEX_VIRT_BASE
,
51 .pfn
= __phys_to_pfn(TS72XX_RTC_INDEX_PHYS_BASE
),
52 .length
= TS72XX_RTC_INDEX_SIZE
,
55 .virtual = TS72XX_RTC_DATA_VIRT_BASE
,
56 .pfn
= __phys_to_pfn(TS72XX_RTC_DATA_PHYS_BASE
),
57 .length
= TS72XX_RTC_DATA_SIZE
,
62 static void __init
ts72xx_map_io(void)
65 iotable_init(ts72xx_io_desc
, ARRAY_SIZE(ts72xx_io_desc
));
69 /*************************************************************************
71 *************************************************************************/
72 #define TS72XX_NAND_CONTROL_ADDR_LINE 22 /* 0xN0400000 */
73 #define TS72XX_NAND_BUSY_ADDR_LINE 23 /* 0xN0800000 */
75 static void ts72xx_nand_hwcontrol(struct mtd_info
*mtd
,
76 int cmd
, unsigned int ctrl
)
78 struct nand_chip
*chip
= mtd
->priv
;
80 if (ctrl
& NAND_CTRL_CHANGE
) {
81 void __iomem
*addr
= chip
->IO_ADDR_R
;
84 addr
+= (1 << TS72XX_NAND_CONTROL_ADDR_LINE
);
86 bits
= __raw_readb(addr
) & ~0x07;
87 bits
|= (ctrl
& NAND_NCE
) << 2; /* bit 0 -> bit 2 */
88 bits
|= (ctrl
& NAND_CLE
); /* bit 1 -> bit 1 */
89 bits
|= (ctrl
& NAND_ALE
) >> 2; /* bit 2 -> bit 0 */
91 __raw_writeb(bits
, addr
);
94 if (cmd
!= NAND_CMD_NONE
)
95 __raw_writeb(cmd
, chip
->IO_ADDR_W
);
98 static int ts72xx_nand_device_ready(struct mtd_info
*mtd
)
100 struct nand_chip
*chip
= mtd
->priv
;
101 void __iomem
*addr
= chip
->IO_ADDR_R
;
103 addr
+= (1 << TS72XX_NAND_BUSY_ADDR_LINE
);
105 return !!(__raw_readb(addr
) & 0x20);
108 #define TS72XX_BOOTROM_PART_SIZE (SZ_16K)
109 #define TS72XX_REDBOOT_PART_SIZE (SZ_2M + SZ_1M)
111 static struct mtd_partition ts72xx_nand_parts
[] = {
113 .name
= "TS-BOOTROM",
115 .size
= TS72XX_BOOTROM_PART_SIZE
,
116 .mask_flags
= MTD_WRITEABLE
, /* force read-only */
119 .offset
= MTDPART_OFS_RETAIN
,
120 .size
= TS72XX_REDBOOT_PART_SIZE
,
121 /* leave so much for last partition */
124 .offset
= MTDPART_OFS_APPEND
,
125 .size
= MTDPART_SIZ_FULL
,
126 .mask_flags
= MTD_WRITEABLE
, /* force read-only */
130 static struct platform_nand_data ts72xx_nand_data
= {
135 .partitions
= ts72xx_nand_parts
,
136 .nr_partitions
= ARRAY_SIZE(ts72xx_nand_parts
),
139 .cmd_ctrl
= ts72xx_nand_hwcontrol
,
140 .dev_ready
= ts72xx_nand_device_ready
,
144 static struct resource ts72xx_nand_resource
[] = {
146 .start
= 0, /* filled in later */
147 .end
= 0, /* filled in later */
148 .flags
= IORESOURCE_MEM
,
152 static struct platform_device ts72xx_nand_flash
= {
155 .dev
.platform_data
= &ts72xx_nand_data
,
156 .resource
= ts72xx_nand_resource
,
157 .num_resources
= ARRAY_SIZE(ts72xx_nand_resource
),
161 static void __init
ts72xx_register_flash(void)
164 * TS7200 has NOR flash all other TS72xx board have NAND flash.
166 if (board_is_ts7200()) {
167 ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE
, SZ_16M
);
169 resource_size_t start
;
171 if (is_ts9420_installed())
172 start
= EP93XX_CS7_PHYS_BASE
;
174 start
= EP93XX_CS6_PHYS_BASE
;
176 ts72xx_nand_resource
[0].start
= start
;
177 ts72xx_nand_resource
[0].end
= start
+ SZ_16M
- 1;
179 platform_device_register(&ts72xx_nand_flash
);
184 static unsigned char ts72xx_rtc_readbyte(unsigned long addr
)
186 __raw_writeb(addr
, TS72XX_RTC_INDEX_VIRT_BASE
);
187 return __raw_readb(TS72XX_RTC_DATA_VIRT_BASE
);
190 static void ts72xx_rtc_writebyte(unsigned char value
, unsigned long addr
)
192 __raw_writeb(addr
, TS72XX_RTC_INDEX_VIRT_BASE
);
193 __raw_writeb(value
, TS72XX_RTC_DATA_VIRT_BASE
);
196 static struct m48t86_ops ts72xx_rtc_ops
= {
197 .readbyte
= ts72xx_rtc_readbyte
,
198 .writebyte
= ts72xx_rtc_writebyte
,
201 static struct platform_device ts72xx_rtc_device
= {
202 .name
= "rtc-m48t86",
205 .platform_data
= &ts72xx_rtc_ops
,
210 static struct resource ts72xx_wdt_resources
[] = {
212 .start
= TS72XX_WDT_CONTROL_PHYS_BASE
,
213 .end
= TS72XX_WDT_CONTROL_PHYS_BASE
+ SZ_4K
- 1,
214 .flags
= IORESOURCE_MEM
,
217 .start
= TS72XX_WDT_FEED_PHYS_BASE
,
218 .end
= TS72XX_WDT_FEED_PHYS_BASE
+ SZ_4K
- 1,
219 .flags
= IORESOURCE_MEM
,
223 static struct platform_device ts72xx_wdt_device
= {
224 .name
= "ts72xx-wdt",
226 .num_resources
= ARRAY_SIZE(ts72xx_wdt_resources
),
227 .resource
= ts72xx_wdt_resources
,
230 static struct ep93xx_eth_data __initdata ts72xx_eth_data
= {
234 static void __init
ts72xx_init_machine(void)
236 ep93xx_init_devices();
237 ts72xx_register_flash();
238 platform_device_register(&ts72xx_rtc_device
);
239 platform_device_register(&ts72xx_wdt_device
);
241 ep93xx_register_eth(&ts72xx_eth_data
, 1);
244 MACHINE_START(TS72XX
, "Technologic Systems TS-72xx SBC")
245 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
246 .atag_offset
= 0x100,
247 .map_io
= ts72xx_map_io
,
248 .init_irq
= ep93xx_init_irq
,
249 .handle_irq
= vic_handle_irq
,
250 .timer
= &ep93xx_timer
,
251 .init_machine
= ts72xx_init_machine
,
252 .init_late
= ep93xx_init_late
,
253 .restart
= ep93xx_restart
,