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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 | 57 | ||
58 | #include <arch/asm/regname.h> |
58 | #include <arch/asm/regname.h> |
59 | 59 | ||
60 | /* Size of the code jumping to the exception handler code |
60 | /* Size of the code jumping to the exception handler code |
61 | * - J+NOP |
61 | * - J+NOP |
62 | */ |
62 | */ |
63 | #define EXCEPTION_JUMP_SIZE 8 |
63 | #define EXCEPTION_JUMP_SIZE 8 |
64 | 64 | ||
65 | #define TLB_EXC ((char *) 0x80000000) |
65 | #define TLB_EXC ((char *) 0x80000000) |
66 | #define NORM_EXC ((char *) 0x80000180) |
66 | #define NORM_EXC ((char *) 0x80000180) |
67 | #define CACHE_EXC ((char *) 0x80000100) |
67 | #define CACHE_EXC ((char *) 0x80000100) |
68 | 68 | ||
69 | 69 | ||
70 | /* Why the linker moves the variable 64K away in assembler |
70 | /* Why the linker moves the variable 64K away in assembler |
71 | * when not in .text section? |
71 | * when not in .text section? |
72 | */ |
72 | */ |
73 | 73 | ||
74 | /* Stack pointer saved when entering user mode */ |
74 | /* Stack pointer saved when entering user mode */ |
75 | uintptr_t supervisor_sp __attribute__ ((section (".text"))); |
75 | uintptr_t supervisor_sp __attribute__ ((section (".text"))); |
76 | 76 | ||
77 | count_t cpu_count = 0; |
77 | count_t cpu_count = 0; |
78 | 78 | ||
- | 79 | /** Performs mips32-specific initialization before main_bsp() is called. */ |
|
79 | void arch_pre_main(void *entry __attribute__((unused)), bootinfo_t *bootinfo) |
80 | void arch_pre_main(void *entry __attribute__((unused)), bootinfo_t *bootinfo) |
80 | { |
81 | { |
81 | /* Setup usermode */ |
82 | /* Setup usermode */ |
82 | init.cnt = bootinfo->cnt; |
83 | init.cnt = bootinfo->cnt; |
83 | 84 | ||
84 | count_t i; |
85 | count_t i; |
85 | for (i = 0; i < min3(bootinfo->cnt, TASKMAP_MAX_RECORDS, CONFIG_INIT_TASKS); i++) { |
86 | for (i = 0; i < min3(bootinfo->cnt, TASKMAP_MAX_RECORDS, CONFIG_INIT_TASKS); i++) { |
86 | init.tasks[i].addr = bootinfo->tasks[i].addr; |
87 | init.tasks[i].addr = bootinfo->tasks[i].addr; |
87 | init.tasks[i].size = bootinfo->tasks[i].size; |
88 | init.tasks[i].size = bootinfo->tasks[i].size; |
88 | } |
89 | } |
89 | 90 | ||
90 | for (i = 0; i < CPUMAP_MAX_RECORDS; i++) { |
91 | for (i = 0; i < CPUMAP_MAX_RECORDS; i++) { |
91 | if ((bootinfo->cpumap & (1 << i)) != 0) |
92 | if ((bootinfo->cpumap & (1 << i)) != 0) |
92 | cpu_count++; |
93 | cpu_count++; |
93 | } |
94 | } |
94 | } |
95 | } |
95 | 96 | ||
96 | void arch_pre_mm_init(void) |
97 | void arch_pre_mm_init(void) |
97 | { |
98 | { |
98 | /* It is not assumed by default */ |
99 | /* It is not assumed by default */ |
99 | interrupts_disable(); |
100 | interrupts_disable(); |
100 | 101 | ||
101 | /* Initialize dispatch table */ |
102 | /* Initialize dispatch table */ |
102 | exception_init(); |
103 | exception_init(); |
103 | 104 | ||
104 | /* Copy the exception vectors to the right places */ |
105 | /* Copy the exception vectors to the right places */ |
105 | memcpy(TLB_EXC, (char *) tlb_refill_entry, EXCEPTION_JUMP_SIZE); |
106 | memcpy(TLB_EXC, (char *) tlb_refill_entry, EXCEPTION_JUMP_SIZE); |
106 | smc_coherence_block(TLB_EXC, EXCEPTION_JUMP_SIZE); |
107 | smc_coherence_block(TLB_EXC, EXCEPTION_JUMP_SIZE); |
107 | memcpy(NORM_EXC, (char *) exception_entry, EXCEPTION_JUMP_SIZE); |
108 | memcpy(NORM_EXC, (char *) exception_entry, EXCEPTION_JUMP_SIZE); |
108 | smc_coherence_block(NORM_EXC, EXCEPTION_JUMP_SIZE); |
109 | smc_coherence_block(NORM_EXC, EXCEPTION_JUMP_SIZE); |
109 | memcpy(CACHE_EXC, (char *) cache_error_entry, EXCEPTION_JUMP_SIZE); |
110 | memcpy(CACHE_EXC, (char *) cache_error_entry, EXCEPTION_JUMP_SIZE); |
110 | smc_coherence_block(CACHE_EXC, EXCEPTION_JUMP_SIZE); |
111 | smc_coherence_block(CACHE_EXC, EXCEPTION_JUMP_SIZE); |
111 | 112 | ||
112 | /* |
113 | /* |
113 | * Switch to BEV normal level so that exception vectors point to the |
114 | * Switch to BEV normal level so that exception vectors point to the |
114 | * kernel. Clear the error level. |
115 | * kernel. Clear the error level. |
115 | */ |
116 | */ |
116 | cp0_status_write(cp0_status_read() & |
117 | cp0_status_write(cp0_status_read() & |
117 | ~(cp0_status_bev_bootstrap_bit | cp0_status_erl_error_bit)); |
118 | ~(cp0_status_bev_bootstrap_bit | cp0_status_erl_error_bit)); |
118 | 119 | ||
119 | /* |
120 | /* |
120 | * Mask all interrupts |
121 | * Mask all interrupts |
121 | */ |
122 | */ |
122 | cp0_mask_all_int(); |
123 | cp0_mask_all_int(); |
123 | 124 | ||
124 | debugger_init(); |
125 | debugger_init(); |
125 | } |
126 | } |
126 | 127 | ||
127 | void arch_post_mm_init(void) |
128 | void arch_post_mm_init(void) |
128 | { |
129 | { |
129 | interrupt_init(); |
130 | interrupt_init(); |
130 | console_init(device_assign_devno()); |
131 | console_init(device_assign_devno()); |
131 | #ifdef CONFIG_FB |
132 | #ifdef CONFIG_FB |
132 | /* GXemul framebuffer */ |
133 | /* GXemul framebuffer */ |
133 | fb_properties_t gxemul_prop = { |
134 | fb_properties_t gxemul_prop = { |
134 | .addr = 0x12000000, |
135 | .addr = 0x12000000, |
135 | .offset = 0, |
136 | .offset = 0, |
136 | .x = 640, |
137 | .x = 640, |
137 | .y = 480, |
138 | .y = 480, |
138 | .scan = 1920, |
139 | .scan = 1920, |
139 | .visual = VISUAL_BGR_8_8_8, |
140 | .visual = VISUAL_BGR_8_8_8, |
140 | }; |
141 | }; |
141 | fb_init(&gxemul_prop); |
142 | fb_init(&gxemul_prop); |
142 | #endif |
143 | #endif |
143 | 144 | ||
144 | #ifdef MACHINE_msim |
145 | #ifdef MACHINE_msim |
145 | sysinfo_set_item_val("machine.msim", NULL, 1); |
146 | sysinfo_set_item_val("machine.msim", NULL, 1); |
146 | #endif |
147 | #endif |
147 | 148 | ||
148 | #ifdef MACHINE_simics |
149 | #ifdef MACHINE_simics |
149 | sysinfo_set_item_val("machine.simics", NULL, 1); |
150 | sysinfo_set_item_val("machine.simics", NULL, 1); |
150 | #endif |
151 | #endif |
151 | 152 | ||
152 | #ifdef MACHINE_bgxemul |
153 | #ifdef MACHINE_bgxemul |
153 | sysinfo_set_item_val("machine.bgxemul", NULL, 1); |
154 | sysinfo_set_item_val("machine.bgxemul", NULL, 1); |
154 | #endif |
155 | #endif |
155 | 156 | ||
156 | #ifdef MACHINE_lgxemul |
157 | #ifdef MACHINE_lgxemul |
157 | sysinfo_set_item_val("machine.lgxemul", NULL, 1); |
158 | sysinfo_set_item_val("machine.lgxemul", NULL, 1); |
158 | #endif |
159 | #endif |
159 | } |
160 | } |
160 | 161 | ||
161 | void arch_post_cpu_init(void) |
162 | void arch_post_cpu_init(void) |
162 | { |
163 | { |
163 | } |
164 | } |
164 | 165 | ||
165 | void arch_pre_smp_init(void) |
166 | void arch_pre_smp_init(void) |
166 | { |
167 | { |
167 | } |
168 | } |
168 | 169 | ||
169 | void arch_post_smp_init(void) |
170 | void arch_post_smp_init(void) |
170 | { |
171 | { |
171 | } |
172 | } |
172 | 173 | ||
173 | void calibrate_delay_loop(void) |
174 | void calibrate_delay_loop(void) |
174 | { |
175 | { |
175 | } |
176 | } |
176 | 177 | ||
177 | void userspace(uspace_arg_t *kernel_uarg) |
178 | void userspace(uspace_arg_t *kernel_uarg) |
178 | { |
179 | { |
179 | /* EXL = 1, UM = 1, IE = 1 */ |
180 | /* EXL = 1, UM = 1, IE = 1 */ |
180 | cp0_status_write(cp0_status_read() | (cp0_status_exl_exception_bit | |
181 | cp0_status_write(cp0_status_read() | (cp0_status_exl_exception_bit | |
181 | cp0_status_um_bit | cp0_status_ie_enabled_bit)); |
182 | cp0_status_um_bit | cp0_status_ie_enabled_bit)); |
182 | cp0_epc_write((uintptr_t) kernel_uarg->uspace_entry); |
183 | cp0_epc_write((uintptr_t) kernel_uarg->uspace_entry); |
183 | userspace_asm(((uintptr_t) kernel_uarg->uspace_stack + PAGE_SIZE), |
184 | userspace_asm(((uintptr_t) kernel_uarg->uspace_stack + PAGE_SIZE), |
184 | (uintptr_t) kernel_uarg->uspace_uarg, |
185 | (uintptr_t) kernel_uarg->uspace_uarg, |
185 | (uintptr_t) kernel_uarg->uspace_entry); |
186 | (uintptr_t) kernel_uarg->uspace_entry); |
186 | 187 | ||
187 | while (1); |
188 | while (1); |
188 | } |
189 | } |
189 | 190 | ||
190 | /** Perform mips32 specific tasks needed before the new task is run. */ |
191 | /** Perform mips32 specific tasks needed before the new task is run. */ |
191 | void before_task_runs_arch(void) |
192 | void before_task_runs_arch(void) |
192 | { |
193 | { |
193 | } |
194 | } |
194 | 195 | ||
195 | /** Perform mips32 specific tasks needed before the new thread is scheduled. */ |
196 | /** Perform mips32 specific tasks needed before the new thread is scheduled. */ |
196 | void before_thread_runs_arch(void) |
197 | void before_thread_runs_arch(void) |
197 | { |
198 | { |
198 | supervisor_sp = (uintptr_t) &THREAD->kstack[THREAD_STACK_SIZE - |
199 | supervisor_sp = (uintptr_t) &THREAD->kstack[THREAD_STACK_SIZE - |
199 | SP_DELTA]; |
200 | SP_DELTA]; |
200 | } |
201 | } |
201 | 202 | ||
202 | void after_thread_ran_arch(void) |
203 | void after_thread_ran_arch(void) |
203 | { |
204 | { |
204 | } |
205 | } |
205 | 206 | ||
206 | /** Set thread-local-storage pointer |
207 | /** Set thread-local-storage pointer |
207 | * |
208 | * |
208 | * We have it currently in K1, it is |
209 | * We have it currently in K1, it is |
209 | * possible to have it separately in the future. |
210 | * possible to have it separately in the future. |
210 | */ |
211 | */ |
211 | unative_t sys_tls_set(unative_t addr) |
212 | unative_t sys_tls_set(unative_t addr) |
212 | { |
213 | { |
213 | return 0; |
214 | return 0; |
214 | } |
215 | } |
215 | 216 | ||
216 | void arch_reboot(void) |
217 | void arch_reboot(void) |
217 | { |
218 | { |
218 | ___halt(); |
219 | ___halt(); |
219 | 220 | ||
220 | while (1); |
221 | while (1); |
221 | } |
222 | } |
222 | 223 | ||
223 | /** Construct function pointer |
224 | /** Construct function pointer |
224 | * |
225 | * |
225 | * @param fptr function pointer structure |
226 | * @param fptr function pointer structure |
226 | * @param addr function address |
227 | * @param addr function address |
227 | * @param caller calling function address |
228 | * @param caller calling function address |
228 | * |
229 | * |
229 | * @return address of the function pointer |
230 | * @return address of the function pointer |
230 | * |
231 | * |
231 | */ |
232 | */ |
232 | void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller) |
233 | void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller) |
233 | { |
234 | { |
234 | return addr; |
235 | return addr; |
235 | } |
236 | } |
236 | 237 | ||
237 | /** @} |
238 | /** @} |
238 | */ |
239 | */ |
239 | 240 |