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
26 #include <linux/atmel_serial.h>
27 #include <mach/hardware.h>
29 #include <mach/at91_dbgu.h>
32 void __iomem *at91_uart;
34 static const u32 uarts_rm9200[] = {
43 static const u32 uarts_sam9260[] = {
54 static const u32 uarts_sam9261[] = {
62 static const u32 uarts_sam9263[] = {
70 static const u32 uarts_sam9g45[] = {
79 static const u32 uarts_sam9rl[] = {
88 static const u32 uarts_sam9x5[] = {
90 AT91SAM9X5_BASE_USART0,
91 AT91SAM9X5_BASE_USART1,
92 AT91SAM9X5_BASE_USART2,
96 static const u32 uarts_sama5d3[] = {
105 static const u32 uarts_sama5d4[] = {
111 static inline const u32* decomp_soc_detect(void __iomem *dbgu_base)
115 cidr = __raw_readl(dbgu_base + AT91_DBGU_CIDR);
116 socid = cidr & ~AT91_CIDR_VERSION;
119 case ARCH_ID_AT91RM9200:
122 case ARCH_ID_AT91SAM9G20:
123 case ARCH_ID_AT91SAM9260:
124 return uarts_sam9260;
126 case ARCH_ID_AT91SAM9261:
127 return uarts_sam9261;
129 case ARCH_ID_AT91SAM9263:
130 return uarts_sam9263;
132 case ARCH_ID_AT91SAM9G45:
133 return uarts_sam9g45;
135 case ARCH_ID_AT91SAM9RL64:
138 case ARCH_ID_AT91SAM9N12:
139 case ARCH_ID_AT91SAM9X5:
143 cidr = __raw_readl(dbgu_base + AT91_DBGU_EXID);
144 if (cidr & ARCH_EXID_SAMA5D3)
145 return uarts_sama5d3;
146 else if (cidr & ARCH_EXID_SAMA5D4)
147 return uarts_sama5d4;
153 if ((cidr & ~AT91_CIDR_EXT) == ARCH_ID_AT91SAM9G10) {
154 return uarts_sam9261;
157 else if ((cidr & AT91_CIDR_ARCH) == ARCH_FAMILY_AT91SAM9XE) {
158 return uarts_sam9260;
164 static inline void arch_decomp_setup(void)
169 usarts = decomp_soc_detect((void __iomem *)AT91_BASE_DBGU0);
171 usarts = decomp_soc_detect((void __iomem *)AT91_BASE_DBGU1);
173 usarts = decomp_soc_detect((void __iomem *)AT91_BASE_DBGU2);
180 /* physical address */
181 at91_uart = (void __iomem *)usarts[i];
183 if (__raw_readl(at91_uart + ATMEL_US_BRGR))
192 * The following code assumes the serial port has already been
193 * initialized by the bootloader. If you didn't setup a port in
194 * your bootloader then nothing will appear (which might be desired).
196 * This does not append a newline
198 static void putc(int c)
203 while (!(__raw_readl(at91_uart + ATMEL_US_CSR) & ATMEL_US_TXRDY))
205 __raw_writel(c, at91_uart + ATMEL_US_THR);
208 static inline void flush(void)
213 /* wait for transmission to complete */
214 while (!(__raw_readl(at91_uart + ATMEL_US_CSR) & ATMEL_US_TXEMPTY))