diff options
Diffstat (limited to 'src/kernel/main.cc')
| -rw-r--r-- | src/kernel/main.cc | 56 |
1 files changed, 53 insertions, 3 deletions
diff --git a/src/kernel/main.cc b/src/kernel/main.cc index 49adf2b..beda9dc 100644 --- a/src/kernel/main.cc +++ b/src/kernel/main.cc @@ -1,17 +1,67 @@ #include "drivers/uart.h" +#include "kernel/pmm.h" +#include "kernel/mm.h" + +void print_hex(uint64_t val) +{ + char buf[17]; + buf[16] = 0; + const char *digits = "0123456789ABCDEF"; + for (int i = 15; i >= 0; i--) + { + buf[i] = digits[val & 0xf]; + val >>= 4; + } + Drivers::uart_puts("0x"); + Drivers::uart_puts(buf); +} extern "C" void kernel_main() { Drivers::uart_init(); + Drivers::uart_puts("\n[Modern DOS Kernel] Booted in S-Mode.\n"); + Drivers::uart_puts("2025 Richard Qin\n"); + Drivers::uart_puts("\n"); + + Drivers::uart_puts("[Kernel] Initializing PMM...\n"); + PMM::init(); + Drivers::uart_puts("[Kernel] PMM initialized.\n"); + Drivers::uart_puts("[Kernel] Testing alloc_page...\n"); + void *p1 = PMM::alloc_page(); + void *p2 = PMM::alloc_page(); + + Drivers::uart_puts("Allocated Page 1: "); + print_hex((uint64_t)p1); Drivers::uart_puts("\n"); - Drivers::uart_puts("Modern DOS v1.0 [RISC-V 64]\n"); - Drivers::uart_puts("2025 Richard Qin\n"); + + Drivers::uart_puts("Allocated Page 2: "); + print_hex((uint64_t)p2); Drivers::uart_puts("\n"); - Drivers::uart_puts("A:\\> "); + Drivers::uart_puts("[Kernel] Freeing Page 1...\n"); + PMM::free_page(p1); + + void *p3 = PMM::alloc_page(); + Drivers::uart_puts("Allocated Page 3: "); + print_hex((uint64_t)p3); + Drivers::uart_puts("\n"); + + if (p3 == p1) + { + Drivers::uart_puts("[Test Passed] Reuse freed memory successfully.\n"); + } + else + { + Drivers::uart_puts("[Test Failed] Memory leak or logic error.\n"); + } + + VM::kvminit(); + Drivers::uart_puts("[Boot] Kernel page table created.\n"); + VM::kvminithart(); + Drivers::uart_puts("[Boot] MMU ENABLED! We are now using virtual addresses.\n"); while (1) { |