If we have better RAM then why stuck at 1MB

Author: scopeInfinity

include/fuzzy/memmgr/layout.asm

@@ -2,15 +2,16 @@
 
 ; START_ENSURE_SAME_layout_h
 MEMORY_APP_SIZE          EQU  0x20000
+MEMORY_KERNEL_SIZE       EQU  0x64000
 ; END_ENSURE_SAME_layout_h
 
 ; Kernel core is app with pid 0
 ; Kernel event is trigged via IRQ0 or syscall,
 STACKINIT_APP EQU (MEMORY_APP_SIZE-4)
-STACKINIT_KERNEL_CORE EQU (STACKINIT_APP-4)
+STACKINIT_KERNEL_CORE EQU (MEMORY_KERNEL_SIZE/2)
 
 ; Should be able to store
 ; - syscall and all internal calls
 ; - ISRs and all internal calls
-STACKINIT_KERNEL_EVENT EQU 0x18000
+STACKINIT_KERNEL_EVENT EQU (MEMORY_KERNEL_SIZE-4)
 

include/fuzzy/memmgr/layout.h

@@ -24,10 +24,11 @@
  * Resolution:
  *  - I'm not sure.
  */
-#define MEMORY_APPBASE_LOCATION 0x10000
+#define MEMORY_APPBASE_LOCATION 0x100000
 
-#define memmgr_app_abs_location(pid) ((pid==0)?0x0F000:(MEMORY_APPBASE_LOCATION + (pid)*MEMORY_APP_SIZE))
-#define memmgr_app_size(pid) (MEMORY_APP_SIZE)
+// Keep in sync with memory_layout.md
+#define memmgr_app_abs_location(pid) ((pid==PID_KERNEL)?0x0C000:(MEMORY_APPBASE_LOCATION + (pid)*MEMORY_APP_SIZE))
+#define memmgr_app_size(pid) ((pid==PID_KERNEL)?0x64000:MEMORY_APP_SIZE)
 
 #define MEMORY_KERNEL_LOCATION (memmgr_app_abs_location(PID_KERNEL))
 #define MEMORY_KERNEL_SIZE (memmgr_app_size(PID_KERNEL))

memory_layout.md

@@ -4,13 +4,15 @@
 |---------  |--------   |--------   |--------------------------------------------   |
 | 0x00000   | 0x003FF   | -         | IVT (standard)                                |
 | 0x00400   | 0x07BFF   | -         | BIOS data area + reserve                      |
-| 0x07C00   | 0x07DFF   | 512B      | Bootloader Stage 1                            |
-| 0x07E00   | 0x07FFF   | 512B      | STATIC CODE for real_mode library             |
-| 0x08000   | 0x0BFFF   | -         | Bootloader Stage 2  + own stack               |
-| 0x0F000   | 0x2EFFF   | 128KB     | Kernel  + (core, irq, syscall) stack          |
-| 0x30000   | 0x4FFFF   | 128KB     | App pid 1                                     |
-| 0x50000   | 0x6FFFF   | 128KB     | App pid 2                                     |
+| 0x07C00   | 0x07DFF   |  512B     | Bootloader Stage 1                            |
+| 0x07E00   | 0x07FFF   |  512B     | STATIC CODE for real_mode library             |
+| 0x08000   | 0x0BFFF   |  16KB     | Bootloader Stage 2  + own stack               |
+| 0x0C000   | 0x6FFFF   | 400KB     | Kernel  + (core, isr, syscall) stack          |
 | 0x70000   | 0x7FFFF   |  64KB     | Extra space for real_mode library+client      |
 | 0x80000   | 0x9FFFF   | 128KB     | Extended BIOS Data area                       |
 | 0xA0000   | 0xBFFFF   | 128KB     | Video memory                                  |
 | 0xC0000   | 0xFFFFF   | 256KB     | BIOS stuff                                    |
+| 0x100000  | 0x1FFFFF  | 1MB       | Kernel future location (not used)             |
+| 0x200000  | 0x2FFFFF  | 1MB       | App pid 1                                     |
+| 0x300000  | 0x3FFFFF  | 1MB       | App pid 2                                     |
+| ...       | ....      | 1MB       | App ...                                       |