Merge branch 'hardware-deploy'

Makefile

@@ -9,6 +9,7 @@ CFLAGS += -ggdb
 # preferentially in alphabetical order.
 KERNEL_SOURCES_x86_64 := \
 	src/x86_64/apic.c \
+	src/x86_64/loadcs.S \
 	src/x86_64/uart.c \
 	src/x86_64/mem.c \
 	src/x86_64/asm.c \

bochsrc

@@ -0,0 +1,34 @@
+cpu: count=1, reset_on_triple_fault=1
+cpuid: x86_64=1, mmx=1, sep=1, simd=sse4_2, apic=xapic, aes=1, movbe=1, xsave=1
+cpuid: family=6, model=0x1a, stepping=5
+
+memory: guest=512, host=256
+
+romimage: file=$BXSHARE/BIOS-bochs-latest, options=fastboot
+
+vgaromimage: file=$BXSHARE/VGABIOS-lgpl-latest
+
+mouse: enabled=0
+
+pci: enabled=1, chipset=i440fx
+
+ata0: enabled=1, ioaddr1=0x1f0, ioaddr2=0x3f0, irq=14
+ata1: enabled=1, ioaddr1=0x170, ioaddr2=0x370, irq=15
+ata2: enabled=0, ioaddr1=0x1e8, ioaddr2=0x3e0, irq=11
+ata3: enabled=0, ioaddr1=0x168, ioaddr2=0x360, irq=9
+
+# hard-coded 16MB disk size
+ata0-master: type=disk, mode=flat, path="build/disk.img", cylinders=64, heads=16, spt=32
+
+boot: disk
+
+panic: action=ask
+error: action=report
+info: action=report
+debug: action=ignore, pci=report # report BX_DEBUG from module 'pci'
+
+debugger_log: -
+
+com1: enabled=1, mode=socket-server, dev=localhost:1111
+port_e9_hack: enabled=1
+

kernel.json

@@ -3,6 +3,6 @@
     "initrd": { "type": "tar", "directory": "build/boot" },
     "config": "bootboot.cfg",
     "partitions": [
-        { "type": "fat16", "size": 16 }
+        { "type": "boot", "size": 16 }
     ]
 }

src/kernel.c

@@ -28,6 +28,7 @@
 
 #include <stdbool.h>
 #include <stdint.h>
+#include <cpuid.h>
 
 #include "x86_64/apic.h"
 #include "x86_64/mem.h"
@@ -71,11 +72,25 @@ void check_initrd() {
     putln();
 }
 
+void console_init(void);
+
 /******************************************
  * Entry point, called by BOOTBOOT Loader *
  ******************************************/
 void _start() {
     /*** NOTE: this code runs on all cores in parallel ***/
+
+    unsigned info[4];
+    __get_cpuid(0x1, &info[0], &info[1], &info[2], &info[3]);
+    unsigned procid = info[1] >> 24;
+    if (procid != bootboot.bspid) {
+        while (1) {
+            __asm__ ("hlt");
+        }
+    }
+
+    console_init();
+
     int x, y, s = bootboot.fb_scanline, w = bootboot.fb_width, h = bootboot.fb_height;
 
     if (s) {
@@ -125,11 +140,19 @@ void _start() {
     }
     putln();
 
-    // hang for now
+#if 0
+    for (int l = 0; l < 100; l++) {
+        for (int i = 0; i < 300; i++) {
+            printf("line %d ", l);
+        }
+        printf("\n");
+    }
+#endif
 
     __asm__("sti");
     lapic_set_timer();
 
+    // hang for now
     PANIC("end of kernel");
 }
 
@@ -149,3 +172,105 @@ typedef struct {
 } __attribute__((packed)) psf2_t;
 
 extern volatile unsigned char _binary_font_psf_start;
+
+uint32_t console_output[200 * 100];
+int console_max_rows;
+int console_max_cols;
+
+int text_cursor_x;
+int text_cursor_y;
+
+static unsigned char *font_get_glyph(char c)
+{
+    psf2_t *font = (psf2_t*)&_binary_font_psf_start;
+    unsigned char *glyphArray = (unsigned char *)&_binary_font_psf_start + font->headersize;
+
+    if (c == 0) return NULL;
+    if (c >= font->numglyph) return NULL;
+
+    return glyphArray + c * font->bytesperglyph;
+}
+
+void console_init(void)
+{
+    psf2_t *font = (psf2_t*)&_binary_font_psf_start;
+    console_max_cols = bootboot.fb_width / (font->width+1);
+    if (console_max_cols > 200) console_max_cols = 200;
+    console_max_rows = bootboot.fb_height / (font->height+1);
+    if (console_max_rows > 100) console_max_rows = 100;
+}
+
+void console_draw(int col, int row)
+{
+    psf2_t *font = (psf2_t*)&_binary_font_psf_start;
+    int line, mask, offs;
+    int bpl = (font->width + 7)/8;
+
+    int cx = col * (font->width + 1);
+    int cy = row * (font->height + 1);
+
+    uint32_t chr = console_output[col + row * console_max_cols];
+    if (chr == 0) chr = ' ';
+
+    unsigned char *glyph = font_get_glyph(chr);
+
+    offs = 4 * cx + cy * bootboot.fb_scanline;
+
+    for (int y = 0; y < font->height; y++) {
+        line = offs;
+        mask = 1 << (font->width - 1);
+        for (int x = 0; x < font->width; x++) {
+            *((uint32_t*)((uint64_t)&fb+line)) = ((int)*glyph) & (mask)?0xFFFFFF:0;
+            mask >>= 1;
+            line += 4;
+        }
+        *((uint32_t*)((uint64_t)&fb+line))=0;
+        glyph+=bpl;
+        offs+=bootboot.fb_scanline;
+    }
+}
+
+void console_scroll(void)
+{
+    for (int i = 0; i+1 < console_max_rows; i++) {
+        memcpy(&console_output[i * console_max_cols],
+                &console_output[(i+1) * console_max_cols],
+                console_max_cols * sizeof *console_output);
+    }
+    memset(&console_output[(console_max_rows-1) * console_max_cols], 0,
+            console_max_cols * sizeof *console_output);
+    text_cursor_y--;
+
+    for (int r = 0; r < console_max_rows; r++) {
+        for (int c = 0; c < console_max_cols; c++) {
+            console_draw(c, r);
+        }
+    }
+}
+
+void visual_putc(char c)
+{
+    int col = text_cursor_x;
+    int row = text_cursor_y;
+
+    if (c == '\r') {
+        text_cursor_x = 0;
+        return;
+    }
+
+    if (c == '\n') {
+        text_cursor_y++;
+        if (text_cursor_y >= console_max_rows) {
+            console_scroll();
+        }
+        return;
+    }
+
+    text_cursor_x++;
+
+    if (col >= console_max_cols) return;
+    if (row >= console_max_rows) return;
+
+    console_output[col + row * console_max_cols] = c;
+    console_draw(col, row);
+}

src/std.c

@@ -89,6 +89,8 @@ static unsigned int current_buffer_position = 0;
 static void linebuf_flush(void) {
     for (unsigned int i = 0; i < current_buffer_position; i++) {
         uart_write_char(linebuf[i]);
+        extern void visual_putc(char c);
+        visual_putc(linebuf[i]);
     }
     current_buffer_position = 0;
 }

src/x86_64/loadcs.S

@@ -0,0 +1,17 @@
+.section .note.GNU-stack
+
+.text
+
+.global loadcs
+
+// void loadcs(uint16_t ss, uint16_t cs)
+// Loads new values into the SS and CS segment selector registers.
+loadcs:
+            mov         (%rsp), %rdx // return address
+            leaq        0x8(%rsp), %rax // old stack pointer from before call
+            push        %rdi        // ss
+            push        %rax        // rsp
+            pushf                   // rflags
+            push        %rsi        // cs
+            push        %rdx        // rip
+            iretq

src/x86_64/mem.c

@@ -2,6 +2,8 @@
 #include "std.h" // remove later, this is only for interrupt handler
 #include "x86_64/apic.h"
 
+extern void loadcs(uint16_t ss, uint16_t cs);
+
 uint64_t gdt[3];
 
 void write_segment_descriptor(uint64_t *entry, uint8_t dpl, uint8_t executable) {
@@ -40,13 +42,15 @@ void init_gdt() {
 
     __asm__("lgdt (%0)" ::"r"(gdtr));
 
+    __asm__("mov %0, %%es" ::"r"(DATA_SEGMENT << 3));
     __asm__("mov %0, %%ds" ::"r"(DATA_SEGMENT << 3));
-
-     // TODO set code segment -> iret?
+    __asm__("mov %0, %%fs" ::"r"(DATA_SEGMENT << 3));
+    __asm__("mov %0, %%gs" ::"r"(DATA_SEGMENT << 3));
+    loadcs(DATA_SEGMENT << 3, CODE_SEGMENT << 3);
 }
 
-struct __attribute__((packed))
-int_desc_entry {
+__attribute__ ((packed))
+struct int_desc_entry {
     uint16_t offset1;
     uint16_t selector;
     uint8_t ist;