From ce13b28b90e8f7d8083658e083831c6528847099 Mon Sep 17 00:00:00 2001
From: Marvin Borner
Date: Wed, 1 Apr 2020 22:58:54 +0200
Subject: Static address linking approach for userspace

Kinda works but loading an statically linked binary into memory via
kmalloc seems to create a crash which results in a bootloop.
---
 src/kernel/fs/load.c | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 src/kernel/fs/load.c

(limited to 'src/kernel/fs/load.c')

diff --git a/src/kernel/fs/load.c b/src/kernel/fs/load.c
new file mode 100644
index 0000000..c7bbb3d
--- /dev/null
+++ b/src/kernel/fs/load.c
@@ -0,0 +1,38 @@
+#include <kernel/fs/load.h>
+#include <kernel/fs/marfs/marfs.h>
+#include <kernel/fs/ata_pio.h>
+#include <kernel/fs/atapi_pio.h>
+#include <kernel/system.h>
+#include <kernel/fs/iso9660/iso9660.h>
+#include <kernel/memory/alloc.h>
+#include <kernel/lib/stdio.h>
+#include <kernel/lib/lib.h>
+
+void load_binaries()
+{
+	userspace = (uint32_t)kmalloc(10000);
+	font = (struct font *)kmalloc(100000); // High quality shit
+
+	uint8_t boot_drive_id = (uint8_t)(*((uint8_t *)0x9000));
+	if (boot_drive_id != 0xE0) {
+		struct ata_interface *primary_master = new_ata(1, 0x1F0);
+		marfs_init(primary_master);
+		marfs_read_whole_file(4, (uint8_t *)userspace);
+		marfs_read_whole_file(5, (uint8_t *)font);
+	} else {
+		char *font_p[] = { "FONT.BIN" };
+		struct iso9660_entity *font_e = ISO9660_get(font_p, 1);
+		if (!font_e)
+			panic("Font not found!");
+		ATAPI_granular_read(1 + (font_e->length / 2048), font_e->lba, (uint8_t *)font);
+		kfree(font_e);
+
+		char *user_p[] = { "USER.BIN" };
+		struct iso9660_entity *user_e = ISO9660_get(user_p, 1);
+		if (!user_e)
+			panic("Userspace binary not found!");
+		ATAPI_granular_read(1 + (user_e->length / 2048), user_e->lba, (uint8_t *)userspace);
+		kfree(user_e);
+	}
+	vga_log("Successfully loaded binaries");
+}
-- 
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