cmos return current date - current irq priority in PIC (L4 Pistachio support) - help fixes
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@557 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard
parent
6986f88c3f
commit
6e44ba7fa2
219
vl.c
219
vl.c
@ -525,44 +525,15 @@ void cmos_ioport_write(CPUState *env, uint32_t addr, uint32_t data)
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}
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}
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uint32_t cmos_ioport_read(CPUState *env, uint32_t addr)
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{
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int ret;
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if (addr == 0x70) {
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return 0xff;
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} else {
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ret = cmos_data[cmos_index];
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switch(cmos_index) {
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case RTC_REG_A:
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/* toggle update-in-progress bit for Linux (same hack as
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plex86) */
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cmos_data[RTC_REG_A] ^= 0x80;
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break;
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case RTC_REG_C:
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pic_set_irq(8, 0);
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cmos_data[RTC_REG_C] = 0x00;
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break;
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}
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#ifdef DEBUG_CMOS
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printf("cmos: read index=0x%02x val=0x%02x\n",
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cmos_index, ret);
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#endif
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return ret;
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}
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}
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static inline int to_bcd(int a)
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{
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return ((a / 10) << 4) | (a % 10);
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}
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void cmos_init(void)
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static void cmos_update_time(void)
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{
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struct tm *tm;
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time_t ti;
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int val;
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ti = time(NULL);
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tm = gmtime(&ti);
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@ -573,6 +544,56 @@ void cmos_init(void)
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cmos_data[RTC_DAY_OF_MONTH] = to_bcd(tm->tm_mday);
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cmos_data[RTC_MONTH] = to_bcd(tm->tm_mon + 1);
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cmos_data[RTC_YEAR] = to_bcd(tm->tm_year % 100);
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cmos_data[REG_IBM_CENTURY_BYTE] = to_bcd((tm->tm_year / 100) + 19);
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}
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uint32_t cmos_ioport_read(CPUState *env, uint32_t addr)
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{
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int ret;
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if (addr == 0x70) {
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return 0xff;
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} else {
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switch(cmos_index) {
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case RTC_SECONDS:
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case RTC_MINUTES:
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case RTC_HOURS:
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case RTC_DAY_OF_WEEK:
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case RTC_DAY_OF_MONTH:
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case RTC_MONTH:
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case RTC_YEAR:
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case REG_IBM_CENTURY_BYTE:
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cmos_update_time();
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ret = cmos_data[cmos_index];
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break;
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case RTC_REG_A:
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ret = cmos_data[cmos_index];
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/* toggle update-in-progress bit for Linux (same hack as
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plex86) */
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cmos_data[RTC_REG_A] ^= 0x80;
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break;
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case RTC_REG_C:
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ret = cmos_data[cmos_index];
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pic_set_irq(8, 0);
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cmos_data[RTC_REG_C] = 0x00;
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break;
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default:
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ret = cmos_data[cmos_index];
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break;
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}
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#ifdef DEBUG_CMOS
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printf("cmos: read index=0x%02x val=0x%02x\n",
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cmos_index, ret);
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#endif
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return ret;
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}
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}
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void cmos_init(void)
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{
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int val;
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cmos_update_time();
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cmos_data[RTC_REG_A] = 0x26;
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cmos_data[RTC_REG_B] = 0x02;
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@ -580,7 +601,6 @@ void cmos_init(void)
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cmos_data[RTC_REG_D] = 0x80;
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/* various important CMOS locations needed by PC/Bochs bios */
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cmos_data[REG_IBM_CENTURY_BYTE] = to_bcd((tm->tm_year / 100) + 19);
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cmos_data[REG_EQUIPMENT_BYTE] = 0x02; /* FPU is there */
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cmos_data[REG_EQUIPMENT_BYTE] |= 0x04; /* PS/2 mouse installed */
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@ -676,14 +696,15 @@ typedef struct PicState {
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uint8_t irr; /* interrupt request register */
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uint8_t imr; /* interrupt mask register */
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uint8_t isr; /* interrupt service register */
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uint8_t priority_add; /* used to compute irq priority */
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uint8_t priority_add; /* highest irq priority */
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uint8_t irq_base;
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uint8_t read_reg_select;
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uint8_t poll;
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uint8_t special_mask;
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uint8_t init_state;
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uint8_t auto_eoi;
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uint8_t rotate_on_autoeoi;
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uint8_t rotate_on_auto_eoi;
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uint8_t special_fully_nested_mode;
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uint8_t init4; /* true if 4 byte init */
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} PicState;
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@ -705,14 +726,16 @@ static inline void pic_set_irq1(PicState *s, int irq, int level)
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}
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}
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/* return the highest priority found in mask (highest = smallest
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number). Return 8 if no irq */
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static inline int get_priority(PicState *s, int mask)
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{
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int priority;
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if (mask == 0)
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return -1;
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priority = 7;
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return 8;
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priority = 0;
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while ((mask & (1 << ((priority + s->priority_add) & 7))) == 0)
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priority--;
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priority++;
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return priority;
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}
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@ -723,13 +746,18 @@ static int pic_get_irq(PicState *s)
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mask = s->irr & ~s->imr;
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priority = get_priority(s, mask);
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if (priority < 0)
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if (priority == 8)
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return -1;
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/* compute current priority */
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cur_priority = get_priority(s, s->isr);
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if (priority > cur_priority) {
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/* compute current priority. If special fully nested mode on the
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master, the IRQ coming from the slave is not taken into account
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for the priority computation. */
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mask = s->isr;
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if (s->special_fully_nested_mode && s == &pics[0])
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mask &= ~(1 << 2);
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cur_priority = get_priority(s, mask);
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if (priority < cur_priority) {
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/* higher priority found: an irq should be generated */
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return priority;
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return (priority + s->priority_add) & 7;
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} else {
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return -1;
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}
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@ -758,6 +786,17 @@ void pic_update_irq(void)
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/* from master pic */
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pic_irq_requested = irq;
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}
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#if defined(DEBUG_PIC)
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{
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int i;
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for(i = 0; i < 2; i++) {
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printf("pic%d: imr=%x irr=%x padd=%d\n",
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i, pics[i].imr, pics[i].irr, pics[i].priority_add);
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}
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}
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printf("pic: cpu_interrupt req=%d\n", pic_irq_requested);
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#endif
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cpu_interrupt(global_env, CPU_INTERRUPT_HARD);
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}
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}
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@ -787,6 +826,18 @@ void pic_set_irq(int irq, int level)
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pic_update_irq();
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}
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/* acknowledge interrupt 'irq' */
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static inline void pic_intack(PicState *s, int irq)
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{
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if (s->auto_eoi) {
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if (s->rotate_on_auto_eoi)
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s->priority_add = (irq + 1) & 7;
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} else {
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s->isr |= (1 << irq);
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}
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s->irr &= ~(1 << irq);
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}
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int cpu_x86_get_pic_interrupt(CPUState *env)
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{
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int irq, irq2, intno;
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@ -804,22 +855,20 @@ int cpu_x86_get_pic_interrupt(CPUState *env)
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if (irq >= 8) {
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irq2 = irq & 7;
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pics[1].isr |= (1 << irq2);
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pics[1].irr &= ~(1 << irq2);
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pic_intack(&pics[1], irq2);
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irq = 2;
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intno = pics[1].irq_base + irq2;
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} else {
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intno = pics[0].irq_base + irq;
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}
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pics[0].isr |= (1 << irq);
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pics[0].irr &= ~(1 << irq);
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pic_intack(&pics[0], irq);
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return intno;
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}
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void pic_ioport_write(CPUState *env, uint32_t addr, uint32_t val)
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{
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PicState *s;
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int priority;
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int priority, cmd, irq;
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#ifdef DEBUG_PIC
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printf("pic_write: addr=0x%02x val=0x%02x\n", addr, val);
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@ -837,45 +886,48 @@ void pic_ioport_write(CPUState *env, uint32_t addr, uint32_t val)
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if (val & 0x08)
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hw_error("level sensitive irq not supported");
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} else if (val & 0x08) {
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if (val & 0x04) {
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if (val & 0x04)
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s->poll = 1;
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} else {
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if (val & 0x02)
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s->read_reg_select = val & 1;
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if (val & 0x40)
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s->special_mask = (val >> 5) & 1;
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}
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} else {
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switch(val) {
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case 0x00:
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case 0x80:
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s->rotate_on_autoeoi = val >> 7;
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cmd = val >> 5;
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switch(cmd) {
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case 0:
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case 4:
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s->rotate_on_auto_eoi = cmd >> 2;
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break;
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case 0x20: /* end of interrupt */
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case 0xa0:
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case 1: /* end of interrupt */
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case 5:
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priority = get_priority(s, s->isr);
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if (priority >= 0) {
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s->isr &= ~(1 << ((priority + s->priority_add) & 7));
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if (priority != 8) {
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irq = (priority + s->priority_add) & 7;
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s->isr &= ~(1 << irq);
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if (cmd == 5)
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s->priority_add = (irq + 1) & 7;
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pic_update_irq();
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}
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if (val == 0xa0)
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s->priority_add = (s->priority_add + 1) & 7;
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break;
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case 3:
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irq = val & 7;
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s->isr &= ~(1 << irq);
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pic_update_irq();
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break;
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case 0x60 ... 0x67:
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priority = val & 7;
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s->isr &= ~(1 << priority);
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pic_update_irq();
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break;
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case 0xc0 ... 0xc7:
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case 6:
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s->priority_add = (val + 1) & 7;
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pic_update_irq();
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break;
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case 0xe0 ... 0xe7:
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priority = val & 7;
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s->isr &= ~(1 << priority);
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s->priority_add = (priority + 1) & 7;
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case 7:
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irq = val & 7;
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s->isr &= ~(1 << irq);
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s->priority_add = (irq + 1) & 7;
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pic_update_irq();
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break;
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default:
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/* no operation */
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break;
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}
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}
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} else {
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@ -897,6 +949,7 @@ void pic_ioport_write(CPUState *env, uint32_t addr, uint32_t val)
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}
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break;
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case 3:
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s->special_fully_nested_mode = (val >> 4) & 1;
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s->auto_eoi = (val >> 1) & 1;
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s->init_state = 0;
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break;
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@ -935,18 +988,18 @@ uint32_t pic_ioport_read(CPUState *env, uint32_t addr1)
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addr = addr1;
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s = &pics[addr >> 7];
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addr &= 1;
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if (s->poll == 1) {
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if (s->poll) {
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ret = pic_poll_read(s, addr1);
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s->poll = 0;
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} else {
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if (addr == 0) {
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if (s->read_reg_select)
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ret = s->isr;
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else
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ret = s->irr;
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} else {
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ret = s->imr;
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}
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if (addr == 0) {
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if (s->read_reg_select)
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ret = s->isr;
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else
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ret = s->irr;
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} else {
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ret = s->imr;
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}
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}
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#ifdef DEBUG_PIC
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printf("pic_read: addr=0x%02x val=0x%02x\n", addr1, ret);
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@ -1729,6 +1782,9 @@ void serial_received_byte(SerialState *s, int ch)
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fflush(stdout);
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term_command = 1;
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break;
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case 'd':
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cpu_set_log(CPU_LOG_ALL);
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break;
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case TERM_ESCAPE:
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goto send_char;
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}
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@ -3180,7 +3236,7 @@ void help(void)
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"-hda/-hdb file use 'file' as IDE hard disk 0/1 image\n"
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"-hdc/-hdd file use 'file' as IDE hard disk 2/3 image\n"
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"-cdrom file use 'file' as IDE cdrom 2 image\n"
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"-boot [c|d] boot on hard disk (c) or CD-ROM (d)\n"
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"-boot [a|b|c|d] boot on floppy (a, b), hard disk (c) or CD-ROM (d)\n"
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"-snapshot write to temporary files instead of disk image files\n"
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"-m megs set virtual RAM size to megs MB\n"
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"-n script set network init script [default=%s]\n"
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@ -3195,7 +3251,7 @@ void help(void)
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"Debug/Expert options:\n"
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"-s wait gdb connection to port %d\n"
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"-p port change gdb connection port\n"
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"-d output log in /tmp/vl.log\n"
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"-d output log to %s\n"
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"-hdachs c,h,s force hard disk 0 geometry (usually qemu can guess it)\n"
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"-L path set the directory for the BIOS and VGA BIOS\n"
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"\n"
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@ -3206,7 +3262,8 @@ void help(void)
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"qemu-fast",
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#endif
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DEFAULT_NETWORK_SCRIPT,
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DEFAULT_GDBSTUB_PORT);
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DEFAULT_GDBSTUB_PORT,
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"/tmp/qemu.log");
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term_print_help();
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#ifndef CONFIG_SOFTMMU
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printf("\n"
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