global_data: Drop spl_handoff

Provide a function to locate this information, rather than doing it
automatically on startup, to save space in global_data.

Signed-off-by: Simon Glass <sjg@chromium.org>

arch/x86/cpu/intel_common/cpu_from_spl.c

@@ -24,9 +24,7 @@ int arch_cpu_init(void)
 	int ret;
 
 #if CONFIG_IS_ENABLED(HANDOFF) && IS_ENABLED(CONFIG_USE_HOB)
-	struct spl_handoff *ho = gd->spl_handoff;
-
-	gd->arch.hob_list = ho->arch.hob_list;
+	gd->arch.hob_list = handoff_get();
 #endif
 	ret = x86_cpu_reinit_f();
 

arch/x86/lib/fsp2/fsp_dram.c

@@ -59,7 +59,7 @@ int dram_init(void)
 #endif
 	} else {
 #if CONFIG_IS_ENABLED(HANDOFF)
-		struct spl_handoff *ho = gd->spl_handoff;
+		struct spl_handoff *ho = handoff_get();
 
 		if (!ho) {
 			log_debug("No SPL handoff found\n");
@@ -82,7 +82,7 @@ phys_addr_t board_get_usable_ram_top(phys_size_t total_size)
 		return gd->ram_size;
 
 #if CONFIG_IS_ENABLED(HANDOFF)
-	struct spl_handoff *ho = gd->spl_handoff;
+	struct spl_handoff *ho = handoff_get();
 
 	log_debug("usable_ram_top = %lx\n", ho->arch.usable_ram_top);
 

cmd/sb.c

@@ -14,8 +14,10 @@ static int do_sb_handoff(struct cmd_tbl *cmdtp, int flag, int argc,
 			 char *const argv[])
 {
 #if CONFIG_IS_ENABLED(HANDOFF)
-	if (gd->spl_handoff)
-		printf("SPL handoff magic %lx\n", gd->spl_handoff->arch.magic);
+	struct spl_handoff *handoff = handoff_get();
+
+	if (handoff)
+		printf("SPL handoff magic %lx\n", handoff->arch.magic);
 	else
 		printf("SPL handoff info not received\n");
 

common/board_f.c

@@ -305,17 +305,6 @@ static int setup_mon_len(void)
 	return 0;
 }
 
-static int setup_spl_handoff(void)
-{
-#if CONFIG_IS_ENABLED(HANDOFF)
-	gd->spl_handoff = bloblist_find(BLOBLISTT_U_BOOT_SPL_HANDOFF,
-					sizeof(struct spl_handoff));
-	debug("Found SPL hand-off info %p\n", gd->spl_handoff);
-#endif
-
-	return 0;
-}
-
 __weak int arch_cpu_init(void)
 {
 	return 0;
@@ -891,7 +880,6 @@ static const init_fnc_t init_sequence_f[] = {
 	initf_bootstage,	/* uses its own timer, so does not need DM */
 	event_init,
 	bloblist_maybe_init,
-	setup_spl_handoff,
 #if defined(CONFIG_CONSOLE_RECORD_INIT_F)
 	console_record_init,
 #endif

common/init/handoff.c

@@ -5,6 +5,7 @@
  * Copyright 2018 Google, Inc
  */
 
+#include <bloblist.h>
 #include <handoff.h>
 #include <asm/global_data.h>
 
@@ -38,3 +39,14 @@ void handoff_load_dram_banks(struct spl_handoff *ho)
 		bd->bi_dram[i].size = ho->ram_bank[i].size;
 	}
 }
+
+struct spl_handoff *handoff_get(void)
+{
+	struct spl_handoff *handoff;
+
+	handoff = bloblist_find(BLOBLISTT_U_BOOT_SPL_HANDOFF,
+				sizeof(struct spl_handoff));
+	debug("Found SPL hand-off info %p\n", handoff);
+
+	return handoff;
+}

drivers/clk/rockchip/clk_rk3399.c

@@ -8,6 +8,7 @@
 #include <dm.h>
 #include <dt-structs.h>
 #include <errno.h>
+#include <handoff.h>
 #include <log.h>
 #include <malloc.h>
 #include <mapmem.h>
@@ -1467,7 +1468,7 @@ static int rk3399_clk_probe(struct udevice *dev)
 	init_clocks = true;
 #elif CONFIG_IS_ENABLED(HANDOFF)
 	if (!(gd->flags & GD_FLG_RELOC)) {
-		if (!(gd->spl_handoff))
+		if (!handoff_get())
 			init_clocks = true;
 	}
 #endif

include/asm-generic/global_data.h

@@ -396,12 +396,6 @@ struct global_data {
 	 */
 	struct bloblist_hdr *bloblist;
 #endif
-#if CONFIG_IS_ENABLED(HANDOFF)
-	/**
-	 * @spl_handoff: SPL hand-off information
-	 */
-	struct spl_handoff *spl_handoff;
-#endif
 #if defined(CONFIG_TRANSLATION_OFFSET)
 	/**
 	 * @translation_offset: optional translation offset

include/handoff.h

@@ -31,6 +31,13 @@ void handoff_save_dram(struct spl_handoff *ho);
 void handoff_load_dram_size(struct spl_handoff *ho);
 void handoff_load_dram_banks(struct spl_handoff *ho);
 
+/**
+ * handoff_get() - Get the SPL handoff information
+ *
+ * Return: Pointer to SPL handoff if received, else NULL
+ */
+struct spl_handoff *handoff_get(void);
+
 /**
  * handoff_arch_save() - Save arch-specific info into the handoff area
  *