Re: [U-Boot] [PATCH] vexpress: qemu can load the fdt to ram base

On Di, 2014-10-21 at 12:05 +0200, Gerd Hoffmann wrote:

Check if the fdt is there (happens only when passed via -dtb cmd line switch to qemu), then setup env accordingly. If present use it. Otherwise try to load from disk.

Oops, wrong patch, correct one just send. It shows what I'm doing though to automatically use the qemu fdt:

+int board_late_init(void) +{

• struct fdt_header *fdt = (void*)V2M_BASE;
• if (fdt_magic(fdt) == FDT_MAGIC) {

• setenv_addr("fdt_addr", (void*)(ulong)V2M_BASE);
  

• printf("QEMU: fdt found at %s, using it.\n", getenv("fdt_addr"));
  

• } else {

• setenv_addr("fdt_addr_r", (void*)((ulong)V2M_BASE + 0x27f00000));
  

• setenv("fdtfile", CONFIG_DEFAULT_FDT_FILE);
  

• printf("QEMU: will try to load %s from disk.\n",
  

•        getenv("fdtfile"));
  

• }
• return 0;

+}

[ This one depends on other non-upstream patches so no plans to submit this upstream atm ]

cheers, Gerd