x86/xen: resume timer irqs early
[linux/fpc-iii.git] / arch / arm / mach-at91 / include / mach / uncompress.h
blob4bb644f8e87c08a9119688968893b8cda217f927
1 /*
2 * arch/arm/mach-at91/include/mach/uncompress.h
4 * Copyright (C) 2003 SAN People
5 * Copyright (C) 2012 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
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
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #ifndef __ASM_ARCH_UNCOMPRESS_H
23 #define __ASM_ARCH_UNCOMPRESS_H
25 #include <linux/io.h>
26 #include <linux/atmel_serial.h>
27 #include <mach/hardware.h>
29 #include <mach/at91_dbgu.h>
30 #include <mach/cpu.h>
32 void __iomem *at91_uart;
34 #if !defined(CONFIG_ARCH_AT91X40)
35 static const u32 uarts_rm9200[] = {
36 AT91_BASE_DBGU0,
37 AT91RM9200_BASE_US0,
38 AT91RM9200_BASE_US1,
39 AT91RM9200_BASE_US2,
40 AT91RM9200_BASE_US3,
44 static const u32 uarts_sam9260[] = {
45 AT91_BASE_DBGU0,
46 AT91SAM9260_BASE_US0,
47 AT91SAM9260_BASE_US1,
48 AT91SAM9260_BASE_US2,
49 AT91SAM9260_BASE_US3,
50 AT91SAM9260_BASE_US4,
51 AT91SAM9260_BASE_US5,
55 static const u32 uarts_sam9261[] = {
56 AT91_BASE_DBGU0,
57 AT91SAM9261_BASE_US0,
58 AT91SAM9261_BASE_US1,
59 AT91SAM9261_BASE_US2,
63 static const u32 uarts_sam9263[] = {
64 AT91_BASE_DBGU1,
65 AT91SAM9263_BASE_US0,
66 AT91SAM9263_BASE_US1,
67 AT91SAM9263_BASE_US2,
71 static const u32 uarts_sam9g45[] = {
72 AT91_BASE_DBGU1,
73 AT91SAM9G45_BASE_US0,
74 AT91SAM9G45_BASE_US1,
75 AT91SAM9G45_BASE_US2,
76 AT91SAM9G45_BASE_US3,
80 static const u32 uarts_sam9rl[] = {
81 AT91_BASE_DBGU0,
82 AT91SAM9RL_BASE_US0,
83 AT91SAM9RL_BASE_US1,
84 AT91SAM9RL_BASE_US2,
85 AT91SAM9RL_BASE_US3,
89 static const u32 uarts_sam9x5[] = {
90 AT91_BASE_DBGU0,
91 AT91SAM9X5_BASE_USART0,
92 AT91SAM9X5_BASE_USART1,
93 AT91SAM9X5_BASE_USART2,
97 static const u32 uarts_sama5[] = {
98 AT91_BASE_DBGU1,
99 SAMA5D3_BASE_USART0,
100 SAMA5D3_BASE_USART1,
101 SAMA5D3_BASE_USART2,
102 SAMA5D3_BASE_USART3,
106 static inline const u32* decomp_soc_detect(void __iomem *dbgu_base)
108 u32 cidr, socid;
110 cidr = __raw_readl(dbgu_base + AT91_DBGU_CIDR);
111 socid = cidr & ~AT91_CIDR_VERSION;
113 switch (socid) {
114 case ARCH_ID_AT91RM9200:
115 return uarts_rm9200;
117 case ARCH_ID_AT91SAM9G20:
118 case ARCH_ID_AT91SAM9260:
119 return uarts_sam9260;
121 case ARCH_ID_AT91SAM9261:
122 return uarts_sam9261;
124 case ARCH_ID_AT91SAM9263:
125 return uarts_sam9263;
127 case ARCH_ID_AT91SAM9G45:
128 return uarts_sam9g45;
130 case ARCH_ID_AT91SAM9RL64:
131 return uarts_sam9rl;
133 case ARCH_ID_AT91SAM9N12:
134 case ARCH_ID_AT91SAM9X5:
135 return uarts_sam9x5;
137 case ARCH_ID_SAMA5D3:
138 return uarts_sama5;
141 /* at91sam9g10 */
142 if ((cidr & ~AT91_CIDR_EXT) == ARCH_ID_AT91SAM9G10) {
143 return uarts_sam9261;
145 /* at91sam9xe */
146 else if ((cidr & AT91_CIDR_ARCH) == ARCH_FAMILY_AT91SAM9XE) {
147 return uarts_sam9260;
150 return NULL;
153 static inline void arch_decomp_setup(void)
155 int i = 0;
156 const u32* usarts;
158 usarts = decomp_soc_detect((void __iomem *)AT91_BASE_DBGU0);
160 if (!usarts)
161 usarts = decomp_soc_detect((void __iomem *)AT91_BASE_DBGU1);
162 if (!usarts) {
163 at91_uart = NULL;
164 return;
167 do {
168 /* physical address */
169 at91_uart = (void __iomem *)usarts[i];
171 if (__raw_readl(at91_uart + ATMEL_US_BRGR))
172 return;
173 i++;
174 } while (usarts[i]);
176 at91_uart = NULL;
178 #else
179 static inline void arch_decomp_setup(void)
181 at91_uart = NULL;
183 #endif
186 * The following code assumes the serial port has already been
187 * initialized by the bootloader. If you didn't setup a port in
188 * your bootloader then nothing will appear (which might be desired).
190 * This does not append a newline
192 static void putc(int c)
194 if (!at91_uart)
195 return;
197 while (!(__raw_readl(at91_uart + ATMEL_US_CSR) & ATMEL_US_TXRDY))
198 barrier();
199 __raw_writel(c, at91_uart + ATMEL_US_THR);
202 static inline void flush(void)
204 if (!at91_uart)
205 return;
207 /* wait for transmission to complete */
208 while (!(__raw_readl(at91_uart + ATMEL_US_CSR) & ATMEL_US_TXEMPTY))
209 barrier();
212 #endif