arch/arm/include/asm/arch-rockchip/boot0.h

   1 /*
   2  * Copyright 2017 Theobroma Systems Design und Consulting GmbH
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 /*
   8  * Execution starts on the instruction following this 4-byte header
   9  * (containing the magic 'RK33').
  10  *
  11  * To make life easier for everyone, we build the SPL binary with
  12  * space for this 4-byte header already included in the binary.
  13  */
  14
  15 #ifdef CONFIG_SPL_BUILD
  16         /*
  17          * We need to add 4 bytes of space for the 'RK33' at the
  18          * beginning of the executable.  However, as we want to keep
  19          * this generic and make it applicable to builds that are like
  20          * the RK3368 (TPL needs this, SPL doesn't) or the RK3399 (no
  21          * TPL, but extra space needed in the SPL), we simply repeat
  22          * the 'b reset' with the expectation that the first one will
  23          * be overwritten, if this is the first stage contained in the
  24          * final image created with mkimage)...
  25          */
  26         b reset  /* may be overwritten --- should be 'nop' or a 'b reset' */
  27 #endif
  28         b reset
  29
  30 #if defined(CONFIG_ROCKCHIP_RK3399) && defined(CONFIG_SPL_BUILD)
  31         .space CONFIG_ROCKCHIP_SPL_RESERVE_IRAM /* space for the ATF data */
  32 #endif