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Commit | Line | Data |
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4a9cbbe8 WD |
1 | /* |
2 | * (C) Copyright 2000 - 2002 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
1a459660 | 5 | * SPDX-License-Identifier: GPL-2.0+ |
4a9cbbe8 WD |
6 | */ |
7 | ||
8 | #include <config.h> | |
9 | #include <mpc824x.h> | |
10 | #include <common.h> | |
11 | #include <command.h> | |
12 | ||
d87080b7 WD |
13 | DECLARE_GLOBAL_DATA_PTR; |
14 | ||
4a9cbbe8 WD |
15 | int checkcpu (void) |
16 | { | |
4a9cbbe8 WD |
17 | unsigned int pvr = get_pvr (); |
18 | unsigned int version = pvr >> 16; | |
19 | unsigned char revision; | |
20 | ulong clock = gd->cpu_clk; | |
21 | char buf[32]; | |
22 | ||
23 | puts ("CPU: "); | |
24 | ||
25 | switch (version) { | |
26 | case CPU_TYPE_8240: | |
27 | puts ("MPC8240"); | |
28 | break; | |
29 | ||
30 | case CPU_TYPE_8245: | |
31 | puts ("MPC8245"); | |
32 | break; | |
33 | ||
34 | default: | |
35 | return -1; /*not valid for this source */ | |
36 | } | |
37 | ||
38 | CONFIG_READ_BYTE (REVID, revision); | |
39 | ||
40 | if (revision) { | |
41 | printf (" Revision %d.%d", | |
42 | (revision & 0xf0) >> 4, | |
43 | (revision & 0x0f)); | |
44 | } else { | |
45 | return -1; /* no valid CPU revision info */ | |
46 | } | |
47 | ||
6b44d9e5 | 48 | printf(" at %s MHz: ", strmhz(buf, clock)); |
4a9cbbe8 | 49 | |
2f848f97 SK |
50 | print_size(checkicache(), " I-Cache "); |
51 | print_size(checkdcache(), " D-Cache\n"); | |
4a9cbbe8 WD |
52 | |
53 | return 0; | |
54 | } | |
55 | ||
56 | /* ------------------------------------------------------------------------- */ | |
57 | /* L1 i-cache */ | |
58 | ||
59 | int checkicache (void) | |
60 | { | |
61 | /*TODO*/ | |
62 | return 128 * 4 * 32; | |
63 | }; | |
64 | ||
65 | /* ------------------------------------------------------------------------- */ | |
66 | /* L1 d-cache */ | |
67 | ||
68 | int checkdcache (void) | |
69 | { | |
70 | /*TODO*/ | |
71 | return 128 * 4 * 32; | |
72 | ||
73 | }; | |
74 | ||
75 | /*------------------------------------------------------------------- */ | |
76 | ||
54841ab5 | 77 | int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
4a9cbbe8 WD |
78 | { |
79 | ulong msr, addr; | |
80 | ||
81 | /* Interrupts and MMU off */ | |
82 | __asm__ ("mtspr 81, 0"); | |
83 | ||
84 | /* Interrupts and MMU off */ | |
85 | __asm__ __volatile__ ("mfmsr %0":"=r" (msr):); | |
86 | ||
87 | msr &= ~0x1030; | |
88 | __asm__ __volatile__ ("mtmsr %0"::"r" (msr)); | |
89 | ||
90 | /* | |
91 | * Trying to execute the next instruction at a non-existing address | |
92 | * should cause a machine check, resulting in reset | |
93 | */ | |
6d0f6bcf JCPV |
94 | #ifdef CONFIG_SYS_RESET_ADDRESS |
95 | addr = CONFIG_SYS_RESET_ADDRESS; | |
4a9cbbe8 WD |
96 | #else |
97 | /* | |
6d0f6bcf JCPV |
98 | * note: when CONFIG_SYS_MONITOR_BASE points to a RAM address, |
99 | * CONFIG_SYS_MONITOR_BASE - sizeof (ulong) is usually a valid | |
8bde7f77 | 100 | * address. Better pick an address known to be invalid on |
6d0f6bcf | 101 | * your system and assign it to CONFIG_SYS_RESET_ADDRESS. |
8bde7f77 | 102 | * "(ulong)-1" used to be a good choice for many systems... |
4a9cbbe8 | 103 | */ |
6d0f6bcf | 104 | addr = CONFIG_SYS_MONITOR_BASE - sizeof (ulong); |
4a9cbbe8 WD |
105 | #endif |
106 | ((void (*)(void)) addr) (); | |
107 | return 1; | |
108 | ||
109 | } | |
110 | ||
111 | /* ------------------------------------------------------------------------- */ | |
112 | ||
113 | /* | |
114 | * Get timebase clock frequency (like cpu_clk in Hz) | |
115 | * This is the sys_logic_clk (memory bus) divided by 4 | |
116 | */ | |
117 | unsigned long get_tbclk (void) | |
118 | { | |
119 | return ((get_bus_freq (0) + 2L) / 4L); | |
120 | } | |
121 | ||
122 | /* ------------------------------------------------------------------------- */ | |
123 | ||
124 | /* | |
125 | * The MPC824x has an integrated PCI controller known as the MPC107. | |
126 | * The following are MPC107 Bridge Controller and PCI Support functions | |
127 | * | |
128 | */ | |
129 | ||
130 | /* | |
131 | * This procedure reads a 32-bit address MPC107 register, and returns | |
132 | * a 32 bit value. It swaps the address to little endian before | |
133 | * writing it to config address, and swaps the value to big endian | |
134 | * before returning to the caller. | |
135 | */ | |
136 | unsigned int mpc824x_mpc107_getreg (unsigned int regNum) | |
137 | { | |
138 | unsigned int temp; | |
139 | ||
140 | /* swap the addr. to little endian */ | |
141 | *(volatile unsigned int *) CHRP_REG_ADDR = PCISWAP (regNum); | |
142 | temp = *(volatile unsigned int *) CHRP_REG_DATA; | |
143 | return PCISWAP (temp); /* swap the data upon return */ | |
144 | } | |
145 | ||
146 | /* | |
147 | * This procedure writes a 32-bit address MPC107 register. It swaps | |
148 | * the address to little endian before writing it to config address. | |
149 | */ | |
150 | ||
151 | void mpc824x_mpc107_setreg (unsigned int regNum, unsigned int regVal) | |
152 | { | |
153 | /* swap the addr. to little endian */ | |
154 | *(volatile unsigned int *) CHRP_REG_ADDR = PCISWAP (regNum); | |
155 | *(volatile unsigned int *) CHRP_REG_DATA = PCISWAP (regVal); | |
156 | return; | |
157 | } | |
158 | ||
159 | ||
160 | /* | |
161 | * Write a byte (8 bits) to a memory location. | |
162 | */ | |
163 | void mpc824x_mpc107_write8 (unsigned int addr, unsigned char data) | |
164 | { | |
165 | *(unsigned char *) addr = data; | |
166 | __asm__ ("sync"); | |
167 | } | |
168 | ||
169 | /* | |
170 | * Write a word (16 bits) to a memory location after the value | |
171 | * has been byte swapped (big to little endian or vice versa) | |
172 | */ | |
173 | ||
174 | void mpc824x_mpc107_write16 (unsigned int address, unsigned short data) | |
175 | { | |
176 | *(volatile unsigned short *) address = BYTE_SWAP_16_BIT (data); | |
177 | __asm__ ("sync"); | |
178 | } | |
179 | ||
180 | /* | |
181 | * Write a long word (32 bits) to a memory location after the value | |
182 | * has been byte swapped (big to little endian or vice versa) | |
183 | */ | |
184 | ||
185 | void mpc824x_mpc107_write32 (unsigned int address, unsigned int data) | |
186 | { | |
187 | *(volatile unsigned int *) address = LONGSWAP (data); | |
188 | __asm__ ("sync"); | |
189 | } | |
190 | ||
191 | /* | |
192 | * Read a byte (8 bits) from a memory location. | |
193 | */ | |
194 | unsigned char mpc824x_mpc107_read8 (unsigned int addr) | |
195 | { | |
196 | return *(volatile unsigned char *) addr; | |
197 | } | |
198 | ||
199 | ||
200 | /* | |
201 | * Read a word (16 bits) from a memory location, and byte swap the | |
202 | * value before returning to the caller. | |
203 | */ | |
204 | unsigned short mpc824x_mpc107_read16 (unsigned int address) | |
205 | { | |
206 | unsigned short retVal; | |
207 | ||
208 | retVal = BYTE_SWAP_16_BIT (*(unsigned short *) address); | |
209 | return retVal; | |
210 | } | |
211 | ||
212 | ||
213 | /* | |
214 | * Read a long word (32 bits) from a memory location, and byte | |
215 | * swap the value before returning to the caller. | |
216 | */ | |
217 | unsigned int mpc824x_mpc107_read32 (unsigned int address) | |
218 | { | |
219 | unsigned int retVal; | |
220 | ||
221 | retVal = LONGSWAP (*(unsigned int *) address); | |
222 | return (retVal); | |
223 | } | |
224 | ||
225 | ||
226 | /* | |
227 | * Read a register in the Embedded Utilities Memory Block address | |
228 | * space. | |
229 | * Input: regNum - register number + utility base address. Example, | |
230 | * the base address of EPIC is 0x40000, the register number | |
231 | * being passed is 0x40000+the address of the target register. | |
232 | * (See epic.h for register addresses). | |
233 | * Output: The 32 bit little endian value of the register. | |
234 | */ | |
235 | ||
236 | unsigned int mpc824x_eummbar_read (unsigned int regNum) | |
237 | { | |
238 | unsigned int temp; | |
239 | ||
240 | temp = *(volatile unsigned int *) (EUMBBAR_VAL + regNum); | |
241 | temp = PCISWAP (temp); | |
242 | return temp; | |
243 | } | |
244 | ||
245 | ||
246 | /* | |
247 | * Write a value to a register in the Embedded Utilities Memory | |
248 | * Block address space. | |
249 | * Input: regNum - register number + utility base address. Example, | |
250 | * the base address of EPIC is 0x40000, the register | |
251 | * number is 0x40000+the address of the target register. | |
252 | * (See epic.h for register addresses). | |
253 | * regVal - value to be written to the register. | |
254 | */ | |
255 | ||
256 | void mpc824x_eummbar_write (unsigned int regNum, unsigned int regVal) | |
257 | { | |
258 | *(volatile unsigned int *) (EUMBBAR_VAL + regNum) = PCISWAP (regVal); | |
259 | return; | |
260 | } | |
261 | ||
262 | /* ------------------------------------------------------------------------- */ |