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https://github.com/Mathewnd/Astral.git
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Matheus
96 lines
2.2 KiB
C
96 lines
2.2 KiB
C
#include <flanterm.h>
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#include <backends/fb.h>
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#include <limine.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <printf.h>
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#include <logging.h>
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#include <string.h>
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#include <kernel/pmm.h>
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#include <arch/mmu.h>
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#include <kernel/init.h>
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#include <logging.h>
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extern volatile struct limine_framebuffer_request fb_liminereq;
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static size_t xs, ys, fbxs, fbys;
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bool init_done;
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#ifdef TERM_EARLY_INIT
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static uint8_t bump[87300000]; // same defaults as flanterm's bump allocator
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static size_t bump_off;
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static void *internalalloc(size_t n) {
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void *p = &bump[bump_off];
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bump_off += n;
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__assert(bump_off <= 87300000);
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return p;
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}
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#else
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// TODO make more efficient. works for now
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static void *internalalloc(size_t n) {
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void *addr = pmm_alloc(n / PAGE_SIZE + 1, PMM_SECTION_DEFAULT);
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__assert(addr);
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return MAKE_HHDM(addr);
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}
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#endif
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static struct flanterm_context *term_ctx;
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static mutex_t term_mutex;
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void term_write(char *str, size_t count) {
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MUTEX_ACQUIRE(&term_mutex);
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flanterm_write(term_ctx, str, count);
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MUTEX_RELEASE(&term_mutex);
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}
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void term_putchar(char c) {
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flanterm_write(term_ctx, &c, 1);
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}
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void term_getsize(size_t *x, size_t *y, size_t *fbx, size_t *fby) {
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*x = xs;
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*y = ys;
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*fbx = fbxs;
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*fby = fbys;
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}
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static void noop(void *, size_t) {
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}
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void term_init() {
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if (init_done)
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return;
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init_done = true;
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__assert(fb_liminereq.response);
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__assert(fb_liminereq.response->framebuffer_count);
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struct limine_framebuffer *fb = fb_liminereq.response->framebuffers[0];
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uint32_t defaultbg = 0x1b1c1b;
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uint32_t defaultfg = 0xffffff;
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// TODO add support for a background if desired by the user
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term_ctx = flanterm_fb_init(internalalloc, noop, fb->address, fb->width, fb->height, fb->pitch,
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fb->red_mask_size, fb->red_mask_shift, fb->green_mask_size, fb->green_mask_shift, fb->blue_mask_size, fb->blue_mask_shift,
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NULL, NULL, NULL, &defaultbg, &defaultfg, NULL, NULL, NULL,
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0, 0, 1, 1, 1, 0);
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__assert(term_ctx);
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xs = term_ctx->cols;
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ys = term_ctx->rows;
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fbxs = fb->width;
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fbys = fb->height;
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MUTEX_INIT(&term_mutex);
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logging_sethook(term_putchar);
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}
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void term_update_framebuffer(void *fb) {
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((struct flanterm_fb_context *)fb)->framebuffer = fb;
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}
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INIT_ROUTINE_DEFINE(term, INIT_ROUTINE_FLAGS_NONE, term_init, vmm);
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