Add BootROM | Fix ResetWrangler for DDR | Add scripts

2020-10-20 21:20:11 -07:00
parent dd358f45ab
commit db73cab164
25 changed files with 1223 additions and 5 deletions
--- a/fpga/src/main/resources/vcu118/sdboot/linker/memory.lds
+++ b/fpga/src/main/resources/vcu118/sdboot/linker/memory.lds
@@ -0,0 +1,5 @@
+MEMORY
+{
+  bootrom_mem (rx) : ORIGIN = 0x10000, LENGTH = 0x2000
+  memory_mem (rwx) : ORIGIN = 0x80000000, LENGTH = 0x40000000
+}
--- a/fpga/src/main/resources/vcu118/sdboot/linker/sdboot.elf.lds
+++ b/fpga/src/main/resources/vcu118/sdboot/linker/sdboot.elf.lds
@@ -0,0 +1,79 @@
+OUTPUT_ARCH("riscv")
+ENTRY(_prog_start)
+
+INCLUDE memory.lds
+
+PHDRS
+{
+  text PT_LOAD;
+  data PT_LOAD;
+  bss PT_LOAD;
+}
+
+SECTIONS
+{
+  PROVIDE(_ram = ORIGIN(memory_mem));
+  PROVIDE(_ram_end = _ram + LENGTH(memory_mem));
+
+  .text ALIGN((ORIGIN(bootrom_mem) + 0x0), 8) : AT(ALIGN((ORIGIN(bootrom_mem) + 0x0), 8)) {
+    PROVIDE(_ftext = .);
+    *(.text.init)
+    *(.text.unlikely .text.unlikely.*)
+    *(.text .text.* .gnu.linkonce.t.*)
+    PROVIDE(_etext = .);
+    . += 0x40; /* to create a gap between .text and .data b/c ifetch can fetch ahead from .data */
+  } >bootrom_mem  :text
+
+  .eh_frame ALIGN((ADDR(.text) + SIZEOF(.text)), 8) : AT(ALIGN((LOADADDR(.text) + SIZEOF(.text)), 8)) {
+    *(.eh_frame)
+  } >bootrom_mem  :text
+
+  .srodata ALIGN((ADDR(.eh_frame) + SIZEOF(.eh_frame)), 8) : AT(ALIGN((LOADADDR(.eh_frame) + SIZEOF(.eh_frame)), 8)) ALIGN_WITH_INPUT {
+    *(.srodata.cst16)
+    *(.srodata.cst8)
+    *(.srodata.cst4)
+    *(.srodata.cst2)
+    *(.srodata.*)
+  } >bootrom_mem  :data
+
+  .data ALIGN((ADDR(.srodata) + SIZEOF(.srodata)), 8) : AT(ALIGN((LOADADDR(.srodata) + SIZEOF(.srodata)), 8)) ALIGN_WITH_INPUT {
+    *(.data .data.* .gnu.linkonce.d.*)
+    *(.tohost) /* TODO: Support sections that aren't explicitly listed in this linker script */
+  } >bootrom_mem  :data
+
+  .sdata ALIGN((ADDR(.data) + SIZEOF(.data)), 8) : AT(ALIGN((LOADADDR(.data) + SIZEOF(.data)), 8)) ALIGN_WITH_INPUT {
+    *(.sdata .sdata.* .gnu.linkonce.s.*)
+  } >bootrom_mem  :data
+
+  .rodata ALIGN((ADDR(.sdata) + SIZEOF(.sdata)), 8) : AT(ALIGN((LOADADDR(.sdata) + SIZEOF(.sdata)), 8)) ALIGN_WITH_INPUT {
+    *(.rodata .rodata.* .gnu.linkonce.r.*)
+  } >bootrom_mem  :data
+
+  PROVIDE(_data = ADDR(.rodata));
+  PROVIDE(_data_lma = LOADADDR(.rodata));
+  PROVIDE(_edata = .);
+
+  .bss ALIGN((ORIGIN(memory_mem) + 0x0), 8) : AT(ALIGN((ORIGIN(memory_mem) + 0x0), 8)) ALIGN(8) {
+    PROVIDE(_fbss = .);
+    PROVIDE(__global_pointer$ = . + 0x7C0);
+    *(.sbss .sbss.* .gnu.linkonce.sb.*)
+    *(.bss .bss.* .gnu.linkonce.b.*)
+    . = ALIGN(8);
+    PROVIDE(_ebss = .);
+  } >memory_mem  :bss
+
+  PROVIDE(_end = .);
+
+  /*
+   * heap_stack_region_usable_end: (ORIGIN(memory_mem) + LENGTH(memory_mem))
+   * heap_stack_min_size: 4096
+   * heap_stack_max_size: 1048576
+   */
+  PROVIDE(_sp = ALIGN(MIN((ORIGIN(memory_mem) + LENGTH(memory_mem)), _ebss + 1048576) - 7, 8));
+  PROVIDE(_heap_end = _sp - 2048);
+
+  /* This section is a noop and is only used for the ASSERT */
+  .stack : {
+    ASSERT(_sp >= (_ebss + 4096), "Error: No room left for the heap and stack");
+  }
+}