Merge patch series "Tidy up use of 'SPL' and CONFIG_SPL_BUILD"

Simon Glass <[email protected]> says:

When the SPL build-phase was first created it was designed to solve a
particular problem (the need to init SDRAM so that U-Boot proper could
be loaded). It has since expanded to become an important part of U-Boot,
with three phases now present: TPL, VPL and SPL

Due to this history, the term 'SPL' is used to mean both a particular
phase (the one before U-Boot proper) and all the non-proper phases.
This has become confusing.

For a similar reason CONFIG_SPL_BUILD is set to 'y' for all 'SPL'
phases, not just SPL. So code which can only be compiled for actual SPL,
for example, must use something like this:

   #if defined(CONFIG_SPL_BUILD) && !defined(CONFIG_TPL_BUILD)

In Makefiles we have similar issues. SPL_ has been used as a variable
which expands to either SPL_ or nothing, to chose between options like
CONFIG_BLK and CONFIG_SPL_BLK. When TPL appeared, a new SPL_TPL variable
was created which expanded to 'SPL_', 'TPL_' or nothing. Later it was
updated to support 'VPL_' as well.

This series starts a change in terminology and usage to resolve the
above issues:

- The word 'xPL' is used instead of 'SPL' to mean a non-proper build
- A new CONFIG_XPL_BUILD define indicates that the current build is an
  'xPL' build
- The existing CONFIG_SPL_BUILD is changed to mean SPL; it is not now
  defined for TPL and VPL phases
- The existing SPL_ Makefile variable is renamed to SPL_
- The existing SPL_TPL Makefile variable is renamed to PHASE_

It should be noted that xpl_phase() can generally be used instead of
the above CONFIGs without a code-space or run-time penalty.

This series does not attempt to convert all of U-Boot to use this new
terminology but it makes a start. In particular, renaming spl.h and
common/spl seems like a bridge too far at this point.

The series is fully bisectable. It has also been checked to ensure there
are no code-size changes on any commit.

1 files changed, 3 insertions, 3 deletions

diff --git a/board/sunxi/board.c b/board/sunxi/board.c
index 961cdcde74d..824c322a0dc 100644
--- a/board/sunxi/board.c
+++ b/board/sunxi/board.c
@@ -281,7 +281,7 @@ int dram_init(void)
 	return 0;
 }
 
-#if defined(CONFIG_NAND_SUNXI) && defined(CONFIG_SPL_BUILD)
+#if defined(CONFIG_NAND_SUNXI) && defined(CONFIG_XPL_BUILD)
 static void nand_pinmux_setup(void)
 {
 	unsigned int pin;
@@ -530,7 +530,7 @@ int mmc_get_env_dev(void)
 #endif
 #endif /* CONFIG_MMC */
 
-#ifdef CONFIG_SPL_BUILD
+#ifdef CONFIG_XPL_BUILD
 
 static void sunxi_spl_store_dram_size(phys_addr_t dram_size)
 {
@@ -641,7 +641,7 @@ void sunxi_board_init(void)
 	else
 		printf("Failed to set core voltage! Can't set CPU frequency\n");
 }
-#endif /* CONFIG_SPL_BUILD */
+#endif /* CONFIG_XPL_BUILD */
 
 #ifdef CONFIG_USB_GADGET
 int g_dnl_board_usb_cable_connected(void)