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-rw-r--r--arch/arm/plat-omap/include/plat/uncompress.h182
1 files changed, 133 insertions, 49 deletions
diff --git a/arch/arm/plat-omap/include/plat/uncompress.h b/arch/arm/plat-omap/include/plat/uncompress.h
index e5723c3e3418..81d9ec540fcf 100644
--- a/arch/arm/plat-omap/include/plat/uncompress.h
+++ b/arch/arm/plat-omap/include/plat/uncompress.h
@@ -19,63 +19,38 @@
19 19
20#include <linux/types.h> 20#include <linux/types.h>
21#include <linux/serial_reg.h> 21#include <linux/serial_reg.h>
22
23#include <asm/mach-types.h>
24
22#include <plat/serial.h> 25#include <plat/serial.h>
23 26
24unsigned int system_rev; 27static volatile u8 *uart1_base;
28static int uart1_shift;
25 29
26#define UART_OMAP_MDR1 0x08 /* mode definition register */ 30static volatile u8 *uart_base;
27#define OMAP_ID_730 0x355F 31static int uart_shift;
28#define OMAP_ID_850 0x362C
29#define ID_MASK 0x7fff
30#define check_port(base, shift) ((base[UART_OMAP_MDR1 << shift] & 7) == 0)
31#define omap_get_id() ((*(volatile unsigned int *)(0xfffed404)) >> 12) & ID_MASK
32 32
33static void putc(int c) 33/*
34 * Store the DEBUG_LL uart number into UART1 scratchpad register.
35 * See also debug-macro.S, and serial.c for related code.
36 *
37 * Please note that we currently assume that:
38 * - UART1 clocks are enabled for register access
39 * - UART1 scratchpad register can be used
40 */
41static void set_uart1_scratchpad(unsigned char port)
34{ 42{
35 volatile u8 * uart = 0; 43 uart1_base[UART_SCR << uart1_shift] = port;
36 int shift = 2; 44}
37
38#ifdef CONFIG_MACH_OMAP_PALMTE
39 return;
40#endif
41
42#ifdef CONFIG_ARCH_OMAP
43 /* Will get removed in the next patch, set to OMAP3 to compile */
44#ifdef CONFIG_OMAP_LL_DEBUG_UART3
45 uart = (volatile u8 *)(OMAP3_UART3_BASE);
46#elif defined(CONFIG_OMAP_LL_DEBUG_UART2)
47 uart = (volatile u8 *)(OMAP3_UART2_BASE);
48#elif defined(CONFIG_OMAP_LL_DEBUG_UART1)
49 uart = (volatile u8 *)(OMAP3_UART1_BASE);
50#elif defined(CONFIG_OMAP_LL_DEBUG_NONE)
51 return;
52#else
53 return;
54#endif
55
56#ifdef CONFIG_ARCH_OMAP1
57 /* Determine which serial port to use */
58 do {
59 /* MMU is not on, so cpu_is_omapXXXX() won't work here */
60 unsigned int omap_id = omap_get_id();
61
62 if (omap_id == OMAP_ID_730 || omap_id == OMAP_ID_850)
63 shift = 0;
64 45
65 if (check_port(uart, shift)) 46static void putc(int c)
66 break; 47{
67 /* Silent boot if no serial ports are enabled. */ 48 if (!uart_base)
68 return; 49 return;
69 } while (0);
70#endif /* CONFIG_ARCH_OMAP1 */
71#endif
72 50
73 /* 51 while (!(uart_base[UART_LSR << uart_shift] & UART_LSR_THRE))
74 * Now, xmit each character
75 */
76 while (!(uart[UART_LSR << shift] & UART_LSR_THRE))
77 barrier(); 52 barrier();
78 uart[UART_TX << shift] = c; 53 uart_base[UART_TX << uart_shift] = c;
79} 54}
80 55
81static inline void flush(void) 56static inline void flush(void)
@@ -83,7 +58,116 @@ static inline void flush(void)
83} 58}
84 59
85/* 60/*
61 * Macros to configure UART1 and debug UART
62 */
63#define _DEBUG_LL_ENTRY(mach, uart1_phys, uart1_shft, \
64 dbg_uart, dbg_shft, dbg_id) \
65 if (machine_is_##mach()) { \
66 uart1_base = (volatile u8 *)(uart1_phys); \
67 uart1_shift = (uart1_shft); \
68 uart_base = (volatile u8 *)(dbg_uart); \
69 uart_shift = (dbg_shft); \
70 port = (dbg_id); \
71 set_uart1_scratchpad(port); \
72 break; \
73 }
74
75#define DEBUG_LL_OMAP7XX(p, mach) \
76 _DEBUG_LL_ENTRY(mach, OMAP1_UART1_BASE, OMAP7XX_PORT_SHIFT, \
77 OMAP1_UART##p##_BASE, OMAP7XX_PORT_SHIFT, OMAP1UART##p)
78
79#define DEBUG_LL_OMAP1(p, mach) \
80 _DEBUG_LL_ENTRY(mach, OMAP1_UART1_BASE, OMAP_PORT_SHIFT, \
81 OMAP1_UART##p##_BASE, OMAP_PORT_SHIFT, OMAP1UART##p)
82
83#define DEBUG_LL_OMAP2(p, mach) \
84 _DEBUG_LL_ENTRY(mach, OMAP2_UART1_BASE, OMAP_PORT_SHIFT, \
85 OMAP2_UART##p##_BASE, OMAP_PORT_SHIFT, OMAP2UART##p)
86
87#define DEBUG_LL_OMAP3(p, mach) \
88 _DEBUG_LL_ENTRY(mach, OMAP3_UART1_BASE, OMAP_PORT_SHIFT, \
89 OMAP3_UART##p##_BASE, OMAP_PORT_SHIFT, OMAP3UART##p)
90
91#define DEBUG_LL_OMAP4(p, mach) \
92 _DEBUG_LL_ENTRY(mach, OMAP4_UART1_BASE, OMAP_PORT_SHIFT, \
93 OMAP4_UART##p##_BASE, OMAP_PORT_SHIFT, OMAP4UART##p)
94
95/* Zoom2/3 shift is different for UART1 and external port */
96#define DEBUG_LL_ZOOM(mach) \
97 _DEBUG_LL_ENTRY(mach, OMAP2_UART1_BASE, OMAP_PORT_SHIFT, \
98 ZOOM_UART_BASE, ZOOM_PORT_SHIFT, ZOOM_UART)
99
100static inline void __arch_decomp_setup(unsigned long arch_id)
101{
102 int port = 0;
103
104 /*
105 * Initialize the port based on the machine ID from the bootloader.
106 * Note that we're using macros here instead of switch statement
107 * as machine_is functions are optimized out for the boards that
108 * are not selected.
109 */
110 do {
111 /* omap7xx/8xx based boards using UART1 with shift 0 */
112 DEBUG_LL_OMAP7XX(1, herald);
113 DEBUG_LL_OMAP7XX(1, omap_perseus2);
114
115 /* omap15xx/16xx based boards using UART1 */
116 DEBUG_LL_OMAP1(1, ams_delta);
117 DEBUG_LL_OMAP1(1, nokia770);
118 DEBUG_LL_OMAP1(1, omap_h2);
119 DEBUG_LL_OMAP1(1, omap_h3);
120 DEBUG_LL_OMAP1(1, omap_innovator);
121 DEBUG_LL_OMAP1(1, omap_osk);
122 DEBUG_LL_OMAP1(1, omap_palmte);
123 DEBUG_LL_OMAP1(1, omap_palmz71);
124
125 /* omap15xx/16xx based boards using UART2 */
126 DEBUG_LL_OMAP1(2, omap_palmtt);
127
128 /* omap15xx/16xx based boards using UART3 */
129 DEBUG_LL_OMAP1(3, sx1);
130
131 /* omap2 based boards using UART1 */
132 DEBUG_LL_OMAP2(1, omap2evm);
133 DEBUG_LL_OMAP2(1, omap_2430sdp);
134 DEBUG_LL_OMAP2(1, omap_apollon);
135 DEBUG_LL_OMAP2(1, omap_h4);
136
137 /* omap2 based boards using UART3 */
138 DEBUG_LL_OMAP2(3, nokia_n800);
139 DEBUG_LL_OMAP2(3, nokia_n810);
140 DEBUG_LL_OMAP2(3, nokia_n810_wimax);
141
142 /* omap3 based boards using UART1 */
143 DEBUG_LL_OMAP2(1, omap3evm);
144 DEBUG_LL_OMAP3(1, omap_3430sdp);
145 DEBUG_LL_OMAP3(1, omap_3630sdp);
146
147 /* omap3 based boards using UART3 */
148 DEBUG_LL_OMAP3(3, cm_t35);
149 DEBUG_LL_OMAP3(3, igep0020);
150 DEBUG_LL_OMAP3(3, nokia_rx51);
151 DEBUG_LL_OMAP3(3, omap3517evm);
152 DEBUG_LL_OMAP3(3, omap3_beagle);
153 DEBUG_LL_OMAP3(3, omap3_pandora);
154 DEBUG_LL_OMAP3(3, omap_ldp);
155 DEBUG_LL_OMAP3(3, overo);
156 DEBUG_LL_OMAP3(3, touchbook);
157
158 /* omap4 based boards using UART3 */
159 DEBUG_LL_OMAP4(3, omap_4430sdp);
160
161 /* zoom2/3 external uart */
162 DEBUG_LL_ZOOM(omap_zoom2);
163 DEBUG_LL_ZOOM(omap_zoom3);
164
165 } while (0);
166}
167
168#define arch_decomp_setup() __arch_decomp_setup(arch_id)
169
170/*
86 * nothing to do 171 * nothing to do
87 */ 172 */
88#define arch_decomp_setup()
89#define arch_decomp_wdog() 173#define arch_decomp_wdog()
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