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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 | #include <userspace.h> |
39 | #include <userspace.h> |
40 | #include <memstr.h> |
40 | #include <memstr.h> |
41 | #include <proc/thread.h> |
41 | #include <proc/thread.h> |
42 | #include <proc/uarg.h> |
42 | #include <proc/uarg.h> |
43 | #include <print.h> |
43 | #include <print.h> |
44 | #include <console/console.h> |
44 | #include <console/console.h> |
45 | #include <syscall/syscall.h> |
45 | #include <syscall/syscall.h> |
46 | #include <sysinfo/sysinfo.h> |
46 | #include <sysinfo/sysinfo.h> |
47 | #include <arch/interrupt.h> |
47 | #include <arch/interrupt.h> |
48 | #include <console/chardev.h> |
48 | #include <console/chardev.h> |
49 | #include <arch/barrier.h> |
49 | #include <arch/barrier.h> |
50 | #include <arch/debugger.h> |
50 | #include <arch/debugger.h> |
51 | #include <genarch/fb/fb.h> |
51 | #include <genarch/fb/fb.h> |
52 | #include <genarch/fb/visuals.h> |
52 | #include <genarch/fb/visuals.h> |
53 | #include <genarch/drivers/dsrln/dsrlnin.h> |
53 | #include <genarch/drivers/dsrln/dsrlnin.h> |
54 | #include <genarch/drivers/dsrln/dsrlnout.h> |
54 | #include <genarch/drivers/dsrln/dsrlnout.h> |
55 | #include <genarch/srln/srln.h> |
55 | #include <genarch/srln/srln.h> |
56 | #include <macros.h> |
56 | #include <macros.h> |
57 | #include <config.h> |
57 | #include <config.h> |
58 | #include <string.h> |
58 | #include <string.h> |
59 | #include <arch/drivers/msim.h> |
59 | #include <arch/drivers/msim.h> |
60 | #include <arch/asm/regname.h> |
60 | #include <arch/asm/regname.h> |
61 | 61 | ||
62 | /* Size of the code jumping to the exception handler code |
62 | /* Size of the code jumping to the exception handler code |
63 | * - J+NOP |
63 | * - J+NOP |
64 | */ |
64 | */ |
65 | #define EXCEPTION_JUMP_SIZE 8 |
65 | #define EXCEPTION_JUMP_SIZE 8 |
66 | 66 | ||
67 | #define TLB_EXC ((char *) 0x80000000) |
67 | #define TLB_EXC ((char *) 0x80000000) |
68 | #define NORM_EXC ((char *) 0x80000180) |
68 | #define NORM_EXC ((char *) 0x80000180) |
69 | #define CACHE_EXC ((char *) 0x80000100) |
69 | #define CACHE_EXC ((char *) 0x80000100) |
70 | 70 | ||
71 | 71 | ||
72 | /* Why the linker moves the variable 64K away in assembler |
72 | /* Why the linker moves the variable 64K away in assembler |
73 | * when not in .text section? |
73 | * when not in .text section? |
74 | */ |
74 | */ |
75 | 75 | ||
76 | /* Stack pointer saved when entering user mode */ |
76 | /* Stack pointer saved when entering user mode */ |
77 | uintptr_t supervisor_sp __attribute__ ((section (".text"))); |
77 | uintptr_t supervisor_sp __attribute__ ((section (".text"))); |
78 | 78 | ||
79 | count_t cpu_count = 0; |
79 | size_t cpu_count = 0; |
80 | 80 | ||
81 | /** Performs mips32-specific initialization before main_bsp() is called. */ |
81 | /** Performs mips32-specific initialization before main_bsp() is called. */ |
82 | void arch_pre_main(void *entry __attribute__((unused)), bootinfo_t *bootinfo) |
82 | void arch_pre_main(void *entry __attribute__((unused)), bootinfo_t *bootinfo) |
83 | { |
83 | { |
84 | /* Setup usermode */ |
84 | /* Setup usermode */ |
85 | init.cnt = bootinfo->cnt; |
85 | init.cnt = bootinfo->cnt; |
86 | 86 | ||
87 | count_t i; |
87 | size_t i; |
88 | 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++) { |
89 | init.tasks[i].addr = bootinfo->tasks[i].addr; |
89 | init.tasks[i].addr = bootinfo->tasks[i].addr; |
90 | init.tasks[i].size = bootinfo->tasks[i].size; |
90 | init.tasks[i].size = bootinfo->tasks[i].size; |
91 | str_cpy(init.tasks[i].name, CONFIG_TASK_NAME_BUFLEN, |
91 | str_cpy(init.tasks[i].name, CONFIG_TASK_NAME_BUFLEN, |
92 | bootinfo->tasks[i].name); |
92 | bootinfo->tasks[i].name); |
93 | } |
93 | } |
94 | 94 | ||
95 | for (i = 0; i < CPUMAP_MAX_RECORDS; i++) { |
95 | for (i = 0; i < CPUMAP_MAX_RECORDS; i++) { |
96 | if ((bootinfo->cpumap & (1 << i)) != 0) |
96 | if ((bootinfo->cpumap & (1 << i)) != 0) |
97 | cpu_count++; |
97 | cpu_count++; |
98 | } |
98 | } |
99 | } |
99 | } |
100 | 100 | ||
101 | void arch_pre_mm_init(void) |
101 | void arch_pre_mm_init(void) |
102 | { |
102 | { |
103 | /* It is not assumed by default */ |
103 | /* It is not assumed by default */ |
104 | interrupts_disable(); |
104 | interrupts_disable(); |
105 | 105 | ||
106 | /* Initialize dispatch table */ |
106 | /* Initialize dispatch table */ |
107 | exception_init(); |
107 | exception_init(); |
108 | 108 | ||
109 | /* Copy the exception vectors to the right places */ |
109 | /* Copy the exception vectors to the right places */ |
110 | memcpy(TLB_EXC, (char *) tlb_refill_entry, EXCEPTION_JUMP_SIZE); |
110 | memcpy(TLB_EXC, (char *) tlb_refill_entry, EXCEPTION_JUMP_SIZE); |
111 | smc_coherence_block(TLB_EXC, EXCEPTION_JUMP_SIZE); |
111 | smc_coherence_block(TLB_EXC, EXCEPTION_JUMP_SIZE); |
112 | memcpy(NORM_EXC, (char *) exception_entry, EXCEPTION_JUMP_SIZE); |
112 | memcpy(NORM_EXC, (char *) exception_entry, EXCEPTION_JUMP_SIZE); |
113 | smc_coherence_block(NORM_EXC, EXCEPTION_JUMP_SIZE); |
113 | smc_coherence_block(NORM_EXC, EXCEPTION_JUMP_SIZE); |
114 | memcpy(CACHE_EXC, (char *) cache_error_entry, EXCEPTION_JUMP_SIZE); |
114 | memcpy(CACHE_EXC, (char *) cache_error_entry, EXCEPTION_JUMP_SIZE); |
115 | smc_coherence_block(CACHE_EXC, EXCEPTION_JUMP_SIZE); |
115 | smc_coherence_block(CACHE_EXC, EXCEPTION_JUMP_SIZE); |
116 | 116 | ||
117 | /* |
117 | /* |
118 | * 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 |
119 | * kernel. Clear the error level. |
119 | * kernel. Clear the error level. |
120 | */ |
120 | */ |
121 | cp0_status_write(cp0_status_read() & |
121 | cp0_status_write(cp0_status_read() & |
122 | ~(cp0_status_bev_bootstrap_bit | cp0_status_erl_error_bit)); |
122 | ~(cp0_status_bev_bootstrap_bit | cp0_status_erl_error_bit)); |
123 | 123 | ||
124 | /* |
124 | /* |
125 | * Mask all interrupts |
125 | * Mask all interrupts |
126 | */ |
126 | */ |
127 | cp0_mask_all_int(); |
127 | cp0_mask_all_int(); |
128 | 128 | ||
129 | debugger_init(); |
129 | debugger_init(); |
130 | } |
130 | } |
131 | 131 | ||
132 | void arch_post_mm_init(void) |
132 | void arch_post_mm_init(void) |
133 | { |
133 | { |
134 | interrupt_init(); |
134 | interrupt_init(); |
135 | 135 | ||
136 | #ifdef CONFIG_FB |
136 | #ifdef CONFIG_FB |
137 | /* GXemul framebuffer */ |
137 | /* GXemul framebuffer */ |
138 | fb_properties_t gxemul_prop = { |
138 | fb_properties_t gxemul_prop = { |
139 | .addr = 0x12000000, |
139 | .addr = 0x12000000, |
140 | .offset = 0, |
140 | .offset = 0, |
141 | .x = 640, |
141 | .x = 640, |
142 | .y = 480, |
142 | .y = 480, |
143 | .scan = 1920, |
143 | .scan = 1920, |
144 | .visual = VISUAL_BGR_8_8_8, |
144 | .visual = VISUAL_BGR_8_8_8, |
145 | }; |
145 | }; |
146 | fb_init(&gxemul_prop); |
146 | fb_init(&gxemul_prop); |
147 | #else |
147 | #else |
148 | #ifdef CONFIG_MIPS_PRN |
148 | #ifdef CONFIG_MIPS_PRN |
149 | dsrlnout_init((ioport8_t *) MSIM_KBD_ADDRESS); |
149 | dsrlnout_init((ioport8_t *) MSIM_KBD_ADDRESS); |
150 | #endif /* CONFIG_MIPS_PRN */ |
150 | #endif /* CONFIG_MIPS_PRN */ |
151 | #endif /* CONFIG_FB */ |
151 | #endif /* CONFIG_FB */ |
152 | } |
152 | } |
153 | 153 | ||
154 | void arch_post_cpu_init(void) |
154 | void arch_post_cpu_init(void) |
155 | { |
155 | { |
156 | } |
156 | } |
157 | 157 | ||
158 | void arch_pre_smp_init(void) |
158 | void arch_pre_smp_init(void) |
159 | { |
159 | { |
160 | } |
160 | } |
161 | 161 | ||
162 | void arch_post_smp_init(void) |
162 | void arch_post_smp_init(void) |
163 | { |
163 | { |
164 | #ifdef CONFIG_MIPS_KBD |
164 | #ifdef CONFIG_MIPS_KBD |
165 | /* |
165 | /* |
166 | * Initialize the msim/GXemul keyboard port. Then initialize the serial line |
166 | * Initialize the msim/GXemul keyboard port. Then initialize the serial line |
167 | * module and connect it to the msim/GXemul keyboard. Enable keyboard interrupts. |
167 | * module and connect it to the msim/GXemul keyboard. Enable keyboard interrupts. |
168 | */ |
168 | */ |
169 | dsrlnin_instance_t *dsrlnin_instance |
169 | dsrlnin_instance_t *dsrlnin_instance |
170 | = dsrlnin_init((dsrlnin_t *) MSIM_KBD_ADDRESS, MSIM_KBD_IRQ); |
170 | = dsrlnin_init((dsrlnin_t *) MSIM_KBD_ADDRESS, MSIM_KBD_IRQ); |
171 | if (dsrlnin_instance) { |
171 | if (dsrlnin_instance) { |
172 | srln_instance_t *srln_instance = srln_init(); |
172 | srln_instance_t *srln_instance = srln_init(); |
173 | if (srln_instance) { |
173 | if (srln_instance) { |
174 | indev_t *sink = stdin_wire(); |
174 | indev_t *sink = stdin_wire(); |
175 | indev_t *srln = srln_wire(srln_instance, sink); |
175 | indev_t *srln = srln_wire(srln_instance, sink); |
176 | dsrlnin_wire(dsrlnin_instance, srln); |
176 | dsrlnin_wire(dsrlnin_instance, srln); |
177 | cp0_unmask_int(MSIM_KBD_IRQ); |
177 | cp0_unmask_int(MSIM_KBD_IRQ); |
178 | } |
178 | } |
179 | } |
179 | } |
180 | 180 | ||
181 | /* |
181 | /* |
182 | * This is the necessary evil until the userspace driver is entirely |
182 | * This is the necessary evil until the userspace driver is entirely |
183 | * self-sufficient. |
183 | * self-sufficient. |
184 | */ |
184 | */ |
185 | sysinfo_set_item_val("kbd", NULL, true); |
185 | sysinfo_set_item_val("kbd", NULL, true); |
186 | sysinfo_set_item_val("kbd.inr", NULL, MSIM_KBD_IRQ); |
186 | sysinfo_set_item_val("kbd.inr", NULL, MSIM_KBD_IRQ); |
187 | sysinfo_set_item_val("kbd.address.virtual", NULL, MSIM_KBD_ADDRESS); |
187 | sysinfo_set_item_val("kbd.address.virtual", NULL, MSIM_KBD_ADDRESS); |
188 | #endif |
188 | #endif |
189 | } |
189 | } |
190 | 190 | ||
191 | void calibrate_delay_loop(void) |
191 | void calibrate_delay_loop(void) |
192 | { |
192 | { |
193 | } |
193 | } |
194 | 194 | ||
195 | void userspace(uspace_arg_t *kernel_uarg) |
195 | void userspace(uspace_arg_t *kernel_uarg) |
196 | { |
196 | { |
197 | /* EXL = 1, UM = 1, IE = 1 */ |
197 | /* EXL = 1, UM = 1, IE = 1 */ |
198 | cp0_status_write(cp0_status_read() | (cp0_status_exl_exception_bit | |
198 | cp0_status_write(cp0_status_read() | (cp0_status_exl_exception_bit | |
199 | cp0_status_um_bit | cp0_status_ie_enabled_bit)); |
199 | cp0_status_um_bit | cp0_status_ie_enabled_bit)); |
200 | cp0_epc_write((uintptr_t) kernel_uarg->uspace_entry); |
200 | cp0_epc_write((uintptr_t) kernel_uarg->uspace_entry); |
201 | userspace_asm(((uintptr_t) kernel_uarg->uspace_stack + PAGE_SIZE), |
201 | userspace_asm(((uintptr_t) kernel_uarg->uspace_stack + PAGE_SIZE), |
202 | (uintptr_t) kernel_uarg->uspace_uarg, |
202 | (uintptr_t) kernel_uarg->uspace_uarg, |
203 | (uintptr_t) kernel_uarg->uspace_entry); |
203 | (uintptr_t) kernel_uarg->uspace_entry); |
204 | 204 | ||
205 | while (1); |
205 | while (1); |
206 | } |
206 | } |
207 | 207 | ||
208 | /** Perform mips32 specific tasks needed before the new task is run. */ |
208 | /** Perform mips32 specific tasks needed before the new task is run. */ |
209 | void before_task_runs_arch(void) |
209 | void before_task_runs_arch(void) |
210 | { |
210 | { |
211 | } |
211 | } |
212 | 212 | ||
213 | /** Perform mips32 specific tasks needed before the new thread is scheduled. */ |
213 | /** Perform mips32 specific tasks needed before the new thread is scheduled. */ |
214 | void before_thread_runs_arch(void) |
214 | void before_thread_runs_arch(void) |
215 | { |
215 | { |
216 | supervisor_sp = (uintptr_t) &THREAD->kstack[THREAD_STACK_SIZE - |
216 | supervisor_sp = (uintptr_t) &THREAD->kstack[THREAD_STACK_SIZE - |
217 | SP_DELTA]; |
217 | SP_DELTA]; |
218 | } |
218 | } |
219 | 219 | ||
220 | void after_thread_ran_arch(void) |
220 | void after_thread_ran_arch(void) |
221 | { |
221 | { |
222 | } |
222 | } |
223 | 223 | ||
224 | /** Set thread-local-storage pointer |
224 | /** Set thread-local-storage pointer |
225 | * |
225 | * |
226 | * We have it currently in K1, it is |
226 | * We have it currently in K1, it is |
227 | * possible to have it separately in the future. |
227 | * possible to have it separately in the future. |
228 | */ |
228 | */ |
229 | unative_t sys_tls_set(unative_t addr) |
229 | unative_t sys_tls_set(unative_t addr) |
230 | { |
230 | { |
231 | return 0; |
231 | return 0; |
232 | } |
232 | } |
233 | 233 | ||
234 | void arch_reboot(void) |
234 | void arch_reboot(void) |
235 | { |
235 | { |
236 | ___halt(); |
236 | ___halt(); |
237 | while (1); |
237 | while (1); |
238 | } |
238 | } |
239 | 239 | ||
240 | /** Construct function pointer |
240 | /** Construct function pointer |
241 | * |
241 | * |
242 | * @param fptr function pointer structure |
242 | * @param fptr function pointer structure |
243 | * @param addr function address |
243 | * @param addr function address |
244 | * @param caller calling function address |
244 | * @param caller calling function address |
245 | * |
245 | * |
246 | * @return address of the function pointer |
246 | * @return address of the function pointer |
247 | * |
247 | * |
248 | */ |
248 | */ |
249 | void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller) |
249 | void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller) |
250 | { |
250 | { |
251 | return addr; |
251 | return addr; |
252 | } |
252 | } |
253 | 253 | ||
254 | void arch_grab_console(void) |
254 | void arch_grab_console(void) |
255 | { |
255 | { |
256 | #ifdef CONFIG_FB |
256 | #ifdef CONFIG_FB |
257 | fb_redraw(); |
257 | fb_redraw(); |
258 | #endif |
258 | #endif |
259 | } |
259 | } |
260 | 260 | ||
261 | /** Return console to userspace |
261 | /** Return console to userspace |
262 | * |
262 | * |
263 | */ |
263 | */ |
264 | void arch_release_console(void) |
264 | void arch_release_console(void) |
265 | { |
265 | { |
266 | } |
266 | } |
267 | 267 | ||
268 | /** @} |
268 | /** @} |
269 | */ |
269 | */ |
270 | 270 |