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7b80d1a3 | 1 | /** @file SysCfgArmVExpress.c\r |
2 | \r | |
3 | Copyright (c) 2011, ARM Ltd. All rights reserved.<BR>\r | |
4 | This program and the accompanying materials\r | |
5 | are licensed and made available under the terms and conditions of the BSD License\r | |
6 | which accompanies this distribution. The full text of the license may be found at\r | |
7 | http://opensource.org/licenses/bsd-license.php\r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
11 | \r | |
12 | **/\r | |
13 | \r | |
14 | #include <PiDxe.h>\r | |
15 | #include <Library/IoLib.h>\r | |
16 | #include <Library/DebugLib.h>\r | |
17 | \r | |
18 | #include <Library/ArmPlatformSysConfigLib.h>\r | |
19 | #include <ArmPlatform.h>\r | |
20 | \r | |
21 | //\r | |
22 | // SYS_CFGCTRL Bits\r | |
23 | //\r | |
24 | #define SYS_CFGCTRL_START BIT31\r | |
25 | #define SYS_CFGCTRL_READ (0 << 30)\r | |
26 | #define SYS_CFGCTRL_WRITE (1 << 30)\r | |
27 | #define SYS_CFGCTRL_FUNCTION(fun) (((fun ) & 0x3F) << 20)\r | |
28 | #define SYS_CFGCTRL_SITE(site) (((site) & 0x3) << 16)\r | |
29 | #define SYS_CFGCTRL_POSITION(pos) (((pos ) & 0xF) << 12)\r | |
30 | #define SYS_CFGCTRL_DEVICE(dev) ((dev ) & 0xFFF)\r | |
31 | \r | |
32 | //\r | |
33 | // SYS_CFGSTAT Bits\r | |
34 | //\r | |
35 | #define SYS_CFGSTAT_ERROR BIT1\r | |
36 | #define SYS_CFGSTAT_COMPLETE BIT0\r | |
37 | \r | |
38 | /****************************************************************************\r | |
39 | *\r | |
40 | * This file makes it easier to access the System Configuration Registers\r | |
41 | * in the ARM Versatile Express motherboard.\r | |
42 | *\r | |
43 | ****************************************************************************/\r | |
44 | \r | |
45 | EFI_STATUS\r | |
46 | ArmPlatformSysConfigInitialize (\r | |
47 | VOID\r | |
48 | )\r | |
49 | {\r | |
50 | return EFI_SUCCESS;\r | |
51 | }\r | |
52 | \r | |
53 | /***************************************\r | |
54 | * GENERAL FUNCTION: AccessSysCfgRegister\r | |
55 | * Interacts with\r | |
56 | * SYS_CFGSTAT\r | |
57 | * SYS_CFGDATA\r | |
58 | * SYS_CFGCTRL\r | |
59 | * for setting and for reading out values\r | |
60 | ***************************************/\r | |
61 | \r | |
62 | EFI_STATUS\r | |
63 | AccessSysCfgRegister (\r | |
64 | IN UINT32 ReadWrite,\r | |
65 | IN UINT32 Function,\r | |
66 | IN UINT32 Site,\r | |
67 | IN UINT32 Position,\r | |
68 | IN UINT32 Device,\r | |
69 | IN OUT UINT32* Data\r | |
70 | )\r | |
71 | {\r | |
72 | UINT32 SysCfgCtrl;\r | |
73 | \r | |
74 | // Clear the COMPLETE bit\r | |
75 | MmioAnd32(ARM_VE_SYS_CFGSTAT_REG, ~SYS_CFGSTAT_COMPLETE);\r | |
76 | \r | |
77 | // If writing, then set the data value\r | |
78 | if(ReadWrite == SYS_CFGCTRL_WRITE) {\r | |
79 | MmioWrite32(ARM_VE_SYS_CFGDATA_REG, *Data);\r | |
80 | }\r | |
81 | \r | |
82 | // Set the control value\r | |
83 | SysCfgCtrl = SYS_CFGCTRL_START | ReadWrite | SYS_CFGCTRL_FUNCTION(Function) | SYS_CFGCTRL_SITE(Site) |\r | |
84 | SYS_CFGCTRL_POSITION(Position) | SYS_CFGCTRL_DEVICE(Device);\r | |
85 | MmioWrite32(ARM_VE_SYS_CFGCTRL_REG, SysCfgCtrl);\r | |
86 | \r | |
87 | // Wait until the COMPLETE bit is set\r | |
88 | while ((MmioRead32(ARM_VE_SYS_CFGSTAT_REG) & SYS_CFGSTAT_COMPLETE) == 0);\r | |
89 | \r | |
90 | // Check for errors\r | |
91 | if(MmioRead32(ARM_VE_SYS_CFGSTAT_REG) & SYS_CFGSTAT_ERROR) {\r | |
92 | return EFI_DEVICE_ERROR;\r | |
93 | }\r | |
94 | \r | |
95 | // If reading then get the data value\r | |
96 | if(ReadWrite == SYS_CFGCTRL_READ) {\r | |
97 | *Data = MmioRead32(ARM_VE_SYS_CFGDATA_REG);\r | |
98 | }\r | |
99 | \r | |
100 | return EFI_SUCCESS;\r | |
101 | }\r | |
102 | \r | |
103 | EFI_STATUS\r | |
104 | ArmPlatformSysConfigGet (\r | |
105 | IN SYS_CONFIG_FUNCTION Function,\r | |
106 | OUT UINT32* Value\r | |
107 | )\r | |
108 | {\r | |
109 | UINT32 Site;\r | |
110 | UINT32 Position;\r | |
111 | UINT32 Device;\r | |
112 | \r | |
113 | Position = 0;\r | |
114 | Device = 0;\r | |
115 | \r | |
116 | // Intercept some functions\r | |
117 | switch(Function) {\r | |
118 | \r | |
119 | case SYS_CFG_OSC_SITE1:\r | |
120 | Function = SYS_CFG_OSC;\r | |
121 | Site = ARM_VE_DAUGHTERBOARD_1_SITE;\r | |
122 | break;\r | |
123 | \r | |
124 | case SYS_CFG_OSC_SITE2:\r | |
125 | Function = SYS_CFG_OSC;\r | |
126 | Site = ARM_VE_DAUGHTERBOARD_2_SITE;\r | |
127 | break;\r | |
128 | \r | |
129 | case SYS_CFG_MUXFPGA:\r | |
130 | Site = *Value;\r | |
131 | break;\r | |
132 | \r | |
133 | case SYS_CFG_OSC:\r | |
134 | case SYS_CFG_VOLT:\r | |
135 | case SYS_CFG_AMP:\r | |
136 | case SYS_CFG_TEMP:\r | |
137 | case SYS_CFG_RESET:\r | |
138 | case SYS_CFG_SCC:\r | |
139 | case SYS_CFG_DVIMODE:\r | |
140 | case SYS_CFG_POWER:\r | |
141 | Site = ARM_VE_MOTHERBOARD_SITE;\r | |
142 | break;\r | |
143 | \r | |
144 | case SYS_CFG_SHUTDOWN:\r | |
145 | case SYS_CFG_REBOOT:\r | |
146 | case SYS_CFG_RTC:\r | |
147 | default:\r | |
148 | return EFI_UNSUPPORTED;\r | |
149 | }\r | |
150 | \r | |
151 | return AccessSysCfgRegister (SYS_CFGCTRL_READ, Function, Site, Position, Device, Value);\r | |
152 | }\r | |
153 | \r | |
154 | EFI_STATUS\r | |
155 | ArmPlatformSysConfigSet (\r | |
156 | IN SYS_CONFIG_FUNCTION Function,\r | |
157 | IN UINT32 Value\r | |
158 | )\r | |
159 | {\r | |
160 | UINT32 Site;\r | |
161 | UINT32 Position;\r | |
162 | UINT32 Device;\r | |
163 | \r | |
164 | Position = 0;\r | |
165 | Device = 0;\r | |
166 | \r | |
167 | // Intercept some functions\r | |
168 | switch(Function) {\r | |
169 | \r | |
170 | case SYS_CFG_OSC_SITE1:\r | |
171 | Function = SYS_CFG_OSC;\r | |
172 | Site = ARM_VE_DAUGHTERBOARD_1_SITE;\r | |
173 | break;\r | |
174 | \r | |
175 | case SYS_CFG_OSC_SITE2:\r | |
176 | Function = SYS_CFG_OSC;\r | |
177 | Site = ARM_VE_DAUGHTERBOARD_2_SITE;\r | |
178 | break;\r | |
179 | \r | |
180 | case SYS_CFG_MUXFPGA:\r | |
181 | Site = Value;\r | |
182 | break;\r | |
183 | \r | |
184 | case SYS_CFG_RESET:\r | |
185 | case SYS_CFG_SCC:\r | |
186 | case SYS_CFG_SHUTDOWN:\r | |
187 | case SYS_CFG_REBOOT:\r | |
188 | case SYS_CFG_DVIMODE:\r | |
189 | case SYS_CFG_POWER:\r | |
190 | Site = ARM_VE_MOTHERBOARD_SITE;\r | |
191 | break;\r | |
192 | \r | |
193 | case SYS_CFG_OSC:\r | |
194 | case SYS_CFG_VOLT:\r | |
195 | case SYS_CFG_AMP:\r | |
196 | case SYS_CFG_TEMP:\r | |
197 | case SYS_CFG_RTC:\r | |
198 | default:\r | |
199 | return(EFI_UNSUPPORTED);\r | |
200 | }\r | |
201 | \r | |
202 | return AccessSysCfgRegister (SYS_CFGCTRL_WRITE, Function, Site, Position, Device, &Value);\r | |
203 | }\r | |
204 | \r | |
205 | EFI_STATUS\r | |
206 | ArmPlatformSysConfigSetDevice (\r | |
207 | IN SYS_CONFIG_FUNCTION Function,\r | |
208 | IN UINT32 Device,\r | |
209 | IN UINT32 Value\r | |
210 | )\r | |
211 | {\r | |
212 | UINT32 Site;\r | |
213 | UINT32 Position;\r | |
214 | \r | |
215 | Position = 0;\r | |
216 | \r | |
217 | // Intercept some functions\r | |
218 | switch(Function) {\r | |
4463f706 | 219 | case SYS_CFG_SCC:\r |
a79803d7 | 220 | #ifdef ARM_VE_SCC_BASE\r |
4463f706 | 221 | MmioWrite32 ((ARM_VE_SCC_BASE + (Device * 4)),Value);\r |
222 | return EFI_SUCCESS;\r | |
a79803d7 | 223 | #else\r |
224 | // There is no System Configuration Controller on the Model\r | |
225 | return EFI_UNSUPPORTED;\r | |
226 | #endif\r | |
7b80d1a3 | 227 | \r |
228 | case SYS_CFG_OSC_SITE1:\r | |
229 | Function = SYS_CFG_OSC;\r | |
230 | Site = ARM_VE_DAUGHTERBOARD_1_SITE;\r | |
231 | break;\r | |
232 | \r | |
233 | case SYS_CFG_OSC_SITE2:\r | |
234 | Function = SYS_CFG_OSC;\r | |
235 | Site = ARM_VE_DAUGHTERBOARD_2_SITE;\r | |
236 | break;\r | |
237 | \r | |
238 | case SYS_CFG_MUXFPGA:\r | |
239 | Site = Value;\r | |
240 | break;\r | |
241 | \r | |
242 | case SYS_CFG_RTC:\r | |
243 | return(EFI_UNSUPPORTED);\r | |
244 | //break;\r | |
245 | \r | |
246 | case SYS_CFG_OSC:\r | |
247 | case SYS_CFG_VOLT:\r | |
248 | case SYS_CFG_AMP:\r | |
249 | case SYS_CFG_TEMP:\r | |
250 | case SYS_CFG_RESET:\r | |
7b80d1a3 | 251 | case SYS_CFG_SHUTDOWN:\r |
252 | case SYS_CFG_REBOOT:\r | |
253 | case SYS_CFG_DVIMODE:\r | |
254 | case SYS_CFG_POWER:\r | |
255 | Site = ARM_VE_MOTHERBOARD_SITE;\r | |
256 | break;\r | |
257 | default:\r | |
258 | return EFI_UNSUPPORTED;\r | |
259 | }\r | |
260 | \r | |
261 | return AccessSysCfgRegister (SYS_CFGCTRL_WRITE, Function, Site, Position, Device, &Value);\r | |
262 | }\r |