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1 | /* |
1 | /* |
2 | * Copyright (c) 2003-2004 Jakub Jermar |
2 | * Copyright (c) 2003-2004 Jakub Jermar |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup mips32 |
29 | /** @addtogroup mips32 |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #include <arch.h> |
35 | #include <arch.h> |
36 | #include <arch/cp0.h> |
36 | #include <arch/cp0.h> |
37 | #include <arch/exception.h> |
37 | #include <arch/exception.h> |
38 | #include <mm/as.h> |
38 | #include <mm/as.h> |
39 | 39 | ||
40 | #include <userspace.h> |
40 | #include <userspace.h> |
41 | #include <arch/console.h> |
41 | #include <arch/console.h> |
42 | #include <memstr.h> |
42 | #include <memstr.h> |
43 | #include <proc/thread.h> |
43 | #include <proc/thread.h> |
44 | #include <proc/uarg.h> |
44 | #include <proc/uarg.h> |
45 | #include <print.h> |
45 | #include <print.h> |
46 | #include <syscall/syscall.h> |
46 | #include <syscall/syscall.h> |
47 | #include <sysinfo/sysinfo.h> |
47 | #include <sysinfo/sysinfo.h> |
48 | 48 | ||
49 | #include <arch/interrupt.h> |
49 | #include <arch/interrupt.h> |
50 | #include <console/chardev.h> |
50 | #include <console/chardev.h> |
51 | #include <arch/barrier.h> |
51 | #include <arch/barrier.h> |
52 | #include <arch/debugger.h> |
52 | #include <arch/debugger.h> |
53 | #include <genarch/fb/fb.h> |
53 | #include <genarch/fb/fb.h> |
54 | #include <genarch/fb/visuals.h> |
54 | #include <genarch/fb/visuals.h> |
55 | #include <macros.h> |
55 | #include <macros.h> |
56 | #include <ddi/device.h> |
56 | #include <ddi/device.h> |
- | 57 | #include <config.h> |
|
- | 58 | #include <string.h> |
|
57 | 59 | ||
58 | #include <arch/asm/regname.h> |
60 | #include <arch/asm/regname.h> |
59 | 61 | ||
60 | /* Size of the code jumping to the exception handler code |
62 | /* Size of the code jumping to the exception handler code |
61 | * - J+NOP |
63 | * - J+NOP |
62 | */ |
64 | */ |
63 | #define EXCEPTION_JUMP_SIZE 8 |
65 | #define EXCEPTION_JUMP_SIZE 8 |
64 | 66 | ||
65 | #define TLB_EXC ((char *) 0x80000000) |
67 | #define TLB_EXC ((char *) 0x80000000) |
66 | #define NORM_EXC ((char *) 0x80000180) |
68 | #define NORM_EXC ((char *) 0x80000180) |
67 | #define CACHE_EXC ((char *) 0x80000100) |
69 | #define CACHE_EXC ((char *) 0x80000100) |
68 | 70 | ||
69 | 71 | ||
70 | /* Why the linker moves the variable 64K away in assembler |
72 | /* Why the linker moves the variable 64K away in assembler |
71 | * when not in .text section? |
73 | * when not in .text section? |
72 | */ |
74 | */ |
73 | 75 | ||
74 | /* Stack pointer saved when entering user mode */ |
76 | /* Stack pointer saved when entering user mode */ |
75 | uintptr_t supervisor_sp __attribute__ ((section (".text"))); |
77 | uintptr_t supervisor_sp __attribute__ ((section (".text"))); |
76 | 78 | ||
77 | count_t cpu_count = 0; |
79 | count_t cpu_count = 0; |
78 | 80 | ||
79 | /** Performs mips32-specific initialization before main_bsp() is called. */ |
81 | /** Performs mips32-specific initialization before main_bsp() is called. */ |
80 | void arch_pre_main(void *entry __attribute__((unused)), bootinfo_t *bootinfo) |
82 | void arch_pre_main(void *entry __attribute__((unused)), bootinfo_t *bootinfo) |
81 | { |
83 | { |
82 | /* Setup usermode */ |
84 | /* Setup usermode */ |
83 | init.cnt = bootinfo->cnt; |
85 | init.cnt = bootinfo->cnt; |
84 | 86 | ||
85 | count_t i; |
87 | count_t i; |
86 | for (i = 0; i < min3(bootinfo->cnt, TASKMAP_MAX_RECORDS, CONFIG_INIT_TASKS); i++) { |
88 | for (i = 0; i < min3(bootinfo->cnt, TASKMAP_MAX_RECORDS, CONFIG_INIT_TASKS); i++) { |
87 | init.tasks[i].addr = bootinfo->tasks[i].addr; |
89 | init.tasks[i].addr = bootinfo->tasks[i].addr; |
88 | init.tasks[i].size = bootinfo->tasks[i].size; |
90 | init.tasks[i].size = bootinfo->tasks[i].size; |
- | 91 | strncpy(init.tasks[i].name, bootinfo->tasks[i].name, |
|
- | 92 | CONFIG_TASK_NAME_BUFLEN); |
|
89 | } |
93 | } |
90 | 94 | ||
91 | for (i = 0; i < CPUMAP_MAX_RECORDS; i++) { |
95 | for (i = 0; i < CPUMAP_MAX_RECORDS; i++) { |
92 | if ((bootinfo->cpumap & (1 << i)) != 0) |
96 | if ((bootinfo->cpumap & (1 << i)) != 0) |
93 | cpu_count++; |
97 | cpu_count++; |
94 | } |
98 | } |
95 | } |
99 | } |
96 | 100 | ||
97 | void arch_pre_mm_init(void) |
101 | void arch_pre_mm_init(void) |
98 | { |
102 | { |
99 | /* It is not assumed by default */ |
103 | /* It is not assumed by default */ |
100 | interrupts_disable(); |
104 | interrupts_disable(); |
101 | 105 | ||
102 | /* Initialize dispatch table */ |
106 | /* Initialize dispatch table */ |
103 | exception_init(); |
107 | exception_init(); |
104 | 108 | ||
105 | /* Copy the exception vectors to the right places */ |
109 | /* Copy the exception vectors to the right places */ |
106 | memcpy(TLB_EXC, (char *) tlb_refill_entry, EXCEPTION_JUMP_SIZE); |
110 | memcpy(TLB_EXC, (char *) tlb_refill_entry, EXCEPTION_JUMP_SIZE); |
107 | smc_coherence_block(TLB_EXC, EXCEPTION_JUMP_SIZE); |
111 | smc_coherence_block(TLB_EXC, EXCEPTION_JUMP_SIZE); |
108 | memcpy(NORM_EXC, (char *) exception_entry, EXCEPTION_JUMP_SIZE); |
112 | memcpy(NORM_EXC, (char *) exception_entry, EXCEPTION_JUMP_SIZE); |
109 | smc_coherence_block(NORM_EXC, EXCEPTION_JUMP_SIZE); |
113 | smc_coherence_block(NORM_EXC, EXCEPTION_JUMP_SIZE); |
110 | memcpy(CACHE_EXC, (char *) cache_error_entry, EXCEPTION_JUMP_SIZE); |
114 | memcpy(CACHE_EXC, (char *) cache_error_entry, EXCEPTION_JUMP_SIZE); |
111 | smc_coherence_block(CACHE_EXC, EXCEPTION_JUMP_SIZE); |
115 | smc_coherence_block(CACHE_EXC, EXCEPTION_JUMP_SIZE); |
112 | 116 | ||
113 | /* |
117 | /* |
114 | * Switch to BEV normal level so that exception vectors point to the |
118 | * Switch to BEV normal level so that exception vectors point to the |
115 | * kernel. Clear the error level. |
119 | * kernel. Clear the error level. |
116 | */ |
120 | */ |
117 | cp0_status_write(cp0_status_read() & |
121 | cp0_status_write(cp0_status_read() & |
118 | ~(cp0_status_bev_bootstrap_bit | cp0_status_erl_error_bit)); |
122 | ~(cp0_status_bev_bootstrap_bit | cp0_status_erl_error_bit)); |
119 | 123 | ||
120 | /* |
124 | /* |
121 | * Mask all interrupts |
125 | * Mask all interrupts |
122 | */ |
126 | */ |
123 | cp0_mask_all_int(); |
127 | cp0_mask_all_int(); |
124 | 128 | ||
125 | debugger_init(); |
129 | debugger_init(); |
126 | } |
130 | } |
127 | 131 | ||
128 | void arch_post_mm_init(void) |
132 | void arch_post_mm_init(void) |
129 | { |
133 | { |
130 | interrupt_init(); |
134 | interrupt_init(); |
131 | console_init(device_assign_devno()); |
135 | console_init(device_assign_devno()); |
132 | #ifdef CONFIG_FB |
136 | #ifdef CONFIG_FB |
133 | /* GXemul framebuffer */ |
137 | /* GXemul framebuffer */ |
134 | fb_properties_t gxemul_prop = { |
138 | fb_properties_t gxemul_prop = { |
135 | .addr = 0x12000000, |
139 | .addr = 0x12000000, |
136 | .offset = 0, |
140 | .offset = 0, |
137 | .x = 640, |
141 | .x = 640, |
138 | .y = 480, |
142 | .y = 480, |
139 | .scan = 1920, |
143 | .scan = 1920, |
140 | .visual = VISUAL_BGR_8_8_8, |
144 | .visual = VISUAL_BGR_8_8_8, |
141 | }; |
145 | }; |
142 | fb_init(&gxemul_prop); |
146 | fb_init(&gxemul_prop); |
143 | #endif |
147 | #endif |
144 | 148 | ||
145 | #ifdef MACHINE_msim |
149 | #ifdef MACHINE_msim |
146 | sysinfo_set_item_val("machine.msim", NULL, 1); |
150 | sysinfo_set_item_val("machine.msim", NULL, 1); |
147 | #endif |
151 | #endif |
148 | 152 | ||
149 | #ifdef MACHINE_simics |
153 | #ifdef MACHINE_simics |
150 | sysinfo_set_item_val("machine.simics", NULL, 1); |
154 | sysinfo_set_item_val("machine.simics", NULL, 1); |
151 | #endif |
155 | #endif |
152 | 156 | ||
153 | #ifdef MACHINE_bgxemul |
157 | #ifdef MACHINE_bgxemul |
154 | sysinfo_set_item_val("machine.bgxemul", NULL, 1); |
158 | sysinfo_set_item_val("machine.bgxemul", NULL, 1); |
155 | #endif |
159 | #endif |
156 | 160 | ||
157 | #ifdef MACHINE_lgxemul |
161 | #ifdef MACHINE_lgxemul |
158 | sysinfo_set_item_val("machine.lgxemul", NULL, 1); |
162 | sysinfo_set_item_val("machine.lgxemul", NULL, 1); |
159 | #endif |
163 | #endif |
160 | } |
164 | } |
161 | 165 | ||
162 | void arch_post_cpu_init(void) |
166 | void arch_post_cpu_init(void) |
163 | { |
167 | { |
164 | } |
168 | } |
165 | 169 | ||
166 | void arch_pre_smp_init(void) |
170 | void arch_pre_smp_init(void) |
167 | { |
171 | { |
168 | } |
172 | } |
169 | 173 | ||
170 | void arch_post_smp_init(void) |
174 | void arch_post_smp_init(void) |
171 | { |
175 | { |
172 | } |
176 | } |
173 | 177 | ||
174 | void calibrate_delay_loop(void) |
178 | void calibrate_delay_loop(void) |
175 | { |
179 | { |
176 | } |
180 | } |
177 | 181 | ||
178 | void userspace(uspace_arg_t *kernel_uarg) |
182 | void userspace(uspace_arg_t *kernel_uarg) |
179 | { |
183 | { |
180 | /* EXL = 1, UM = 1, IE = 1 */ |
184 | /* EXL = 1, UM = 1, IE = 1 */ |
181 | cp0_status_write(cp0_status_read() | (cp0_status_exl_exception_bit | |
185 | cp0_status_write(cp0_status_read() | (cp0_status_exl_exception_bit | |
182 | cp0_status_um_bit | cp0_status_ie_enabled_bit)); |
186 | cp0_status_um_bit | cp0_status_ie_enabled_bit)); |
183 | cp0_epc_write((uintptr_t) kernel_uarg->uspace_entry); |
187 | cp0_epc_write((uintptr_t) kernel_uarg->uspace_entry); |
184 | userspace_asm(((uintptr_t) kernel_uarg->uspace_stack + PAGE_SIZE), |
188 | userspace_asm(((uintptr_t) kernel_uarg->uspace_stack + PAGE_SIZE), |
185 | (uintptr_t) kernel_uarg->uspace_uarg, |
189 | (uintptr_t) kernel_uarg->uspace_uarg, |
186 | (uintptr_t) kernel_uarg->uspace_entry); |
190 | (uintptr_t) kernel_uarg->uspace_entry); |
187 | 191 | ||
188 | while (1); |
192 | while (1); |
189 | } |
193 | } |
190 | 194 | ||
191 | /** Perform mips32 specific tasks needed before the new task is run. */ |
195 | /** Perform mips32 specific tasks needed before the new task is run. */ |
192 | void before_task_runs_arch(void) |
196 | void before_task_runs_arch(void) |
193 | { |
197 | { |
194 | } |
198 | } |
195 | 199 | ||
196 | /** Perform mips32 specific tasks needed before the new thread is scheduled. */ |
200 | /** Perform mips32 specific tasks needed before the new thread is scheduled. */ |
197 | void before_thread_runs_arch(void) |
201 | void before_thread_runs_arch(void) |
198 | { |
202 | { |
199 | supervisor_sp = (uintptr_t) &THREAD->kstack[THREAD_STACK_SIZE - |
203 | supervisor_sp = (uintptr_t) &THREAD->kstack[THREAD_STACK_SIZE - |
200 | SP_DELTA]; |
204 | SP_DELTA]; |
201 | } |
205 | } |
202 | 206 | ||
203 | void after_thread_ran_arch(void) |
207 | void after_thread_ran_arch(void) |
204 | { |
208 | { |
205 | } |
209 | } |
206 | 210 | ||
207 | /** Set thread-local-storage pointer |
211 | /** Set thread-local-storage pointer |
208 | * |
212 | * |
209 | * We have it currently in K1, it is |
213 | * We have it currently in K1, it is |
210 | * possible to have it separately in the future. |
214 | * possible to have it separately in the future. |
211 | */ |
215 | */ |
212 | unative_t sys_tls_set(unative_t addr) |
216 | unative_t sys_tls_set(unative_t addr) |
213 | { |
217 | { |
214 | return 0; |
218 | return 0; |
215 | } |
219 | } |
216 | 220 | ||
217 | void arch_reboot(void) |
221 | void arch_reboot(void) |
218 | { |
222 | { |
219 | ___halt(); |
223 | ___halt(); |
220 | 224 | ||
221 | while (1); |
225 | while (1); |
222 | } |
226 | } |
223 | 227 | ||
224 | /** Construct function pointer |
228 | /** Construct function pointer |
225 | * |
229 | * |
226 | * @param fptr function pointer structure |
230 | * @param fptr function pointer structure |
227 | * @param addr function address |
231 | * @param addr function address |
228 | * @param caller calling function address |
232 | * @param caller calling function address |
229 | * |
233 | * |
230 | * @return address of the function pointer |
234 | * @return address of the function pointer |
231 | * |
235 | * |
232 | */ |
236 | */ |
233 | void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller) |
237 | void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller) |
234 | { |
238 | { |
235 | return addr; |
239 | return addr; |
236 | } |
240 | } |
237 | 241 | ||
238 | /** @} |
242 | /** @} |
239 | */ |
243 | */ |
240 | 244 |