add boundary symbols to linker script

- update platform.h to use linker script boundary symbols - fix banner.c
saursin · Oct 15, 2023 · e82d9b3 · e82d9b3
1 parent d9bfafd
commit e82d9b3
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Showing 4 changed files with 31 additions and 10 deletions.
diff --git a/sw/examples/banner/banner.c b/sw/examples/banner/banner.c
@@ -34,8 +34,8 @@ int main()
     puts(banner);
     printf("CPU      : RISC-V Atom @ %d Hz\n", CLK_FREQ);
     puts("Arch     : RV32I - little endian\n");
-    printf("CODE RAM : 0x%8x (%d bytes)\n", MEM_ROM_ADDR, MEM_ROM_SIZE);
-    printf("DATA RAM : 0x%8x (%d bytes)\n", MEM_RAM_ADDR, MEM_RAM_SIZE);
+    printf("CODE RAM : 0x%8x (%d bytes)\n", CODERAM_BASE, CODERAM_SIZE);
+    printf("DATA RAM : 0x%8x (%d bytes)\n", DATARAM_BASE, DATARAM_SIZE);
     puts("Exiting...\n");
     return 0;
 }
diff --git a/sw/lib/include/platform.h b/sw/lib/include/platform.h
@@ -15,11 +15,16 @@
 #ifdef TARGET_HYDROGENSOC
     // #define EXCEPTION
 
-    #define MEM_ROM_ADDR    0x20000000
-    #define MEM_ROM_SIZE    32*1024        // 32 KB
+    extern int __coderam_start;
+    extern int __coderam_size;
+    extern int __dataram_start;
+    extern int __dataram_size;
 
-    #define MEM_RAM_ADDR    0x20008000
-    #define MEM_RAM_SIZE    16*1024        // 16 KB
+    #define CODERAM_BASE    &__coderam_start
+    #define CODERAM_SIZE    &__coderam_size
+
+    #define DATARAM_BASE    &__dataram_start
+    #define DATARAM_SIZE    &__dataram_size
 
     // ---------- UART ------------
     #define UART_ADDR 0x40000000
@@ -39,11 +44,17 @@
 
 #else
 #ifdef TARGET_ATOMBONES
-    #define MEM_ROM_BEGIN   0x00000000
-    #define MEM_ROM_SIZE    64*1024*1024    // 64 MB
+    extern int __coderam_start;
+    extern int __coderam_size;
+    extern int __dataram_start;
+    extern int __dataram_size;
+
+    #define CODERAM_BASE    &__coderam_start
+    #define CODERAM_SIZE    &__coderam_size
+
+    #define DATARAM_BASE    &__dataram_start
+    #define DATARAM_SIZE    &__dataram_size
 
-    #define MEM_RAM_BEGIN   0x04000000
-    #define MEM_RAM_SIZE    64*1024*1024    // 64 MB
 
     // ---------- UART ------------
     #define UART_ADDR 0x40000000

diff --git a/sw/lib/link/link_atombones.ld b/sw/lib/link/link_atombones.ld
@@ -16,6 +16,11 @@ MEMORY
     DATA_RAM (rwx): ORIGIN = 0x24000000, LENGTH = 16M
 }
 
+__coderam_start = ORIGIN(CODE_RAM);
+__coderam_size  = LENGTH(CODE_RAM);
+__dataram_start = ORIGIN(DATA_RAM);
+__dataram_size  = LENGTH(DATA_RAM);
+
 SECTIONS
 {
     /* ==== CODE RAM ==== */

diff --git a/sw/lib/link/link_hydrogensoc.ld b/sw/lib/link/link_hydrogensoc.ld
@@ -16,6 +16,11 @@ MEMORY
     DATA_RAM (rwx): ORIGIN = 0x2000a000, LENGTH = 8K
 }
 
+__coderam_start = ORIGIN(CODE_RAM);
+__coderam_size  = LENGTH(CODE_RAM);
+__dataram_start = ORIGIN(DATA_RAM);
+__dataram_size  = LENGTH(DATA_RAM);
+
 SECTIONS
 {
     /* ==== CODE RAM ==== */