From 9df731a176aab8e03b984b681b1bea01ccff6644 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 06 Nov 2023 07:23:06 +0000
Subject: [PATCH] rk3568 rt uboot init
---
u-boot/common/spl/spl_ab.c | 35 +++++++++++++++++++++++++++++++++++
1 files changed, 35 insertions(+), 0 deletions(-)
diff --git a/u-boot/common/spl/spl_ab.c b/u-boot/common/spl/spl_ab.c
index 31b63f7..842c36c 100644
--- a/u-boot/common/spl/spl_ab.c
+++ b/u-boot/common/spl/spl_ab.c
@@ -319,3 +319,38 @@
out:
return ret;
}
+
+/*
+ * If boot A/B system fail, tries-remaining decrease 1
+ * and do reset automatically if still bootable.
+ */
+int spl_ab_decrease_reset(struct blk_desc *dev_desc)
+{
+ AvbABData ab_data;
+ int ret;
+
+ ret = spl_ab_data_read(dev_desc, &ab_data, "misc");
+ if (ret)
+ return ret;
+
+ /* If current device cannot boot, return and try other devices. */
+ if (!spl_slot_is_bootable(&ab_data.slots[0]) &&
+ !spl_slot_is_bootable(&ab_data.slots[1])) {
+ printf("A/B: no bootable slot\n");
+ return -ENODEV;
+ }
+
+ /* If current device still can boot, decrease and do reset. */
+ ret = spl_ab_decrease_tries(dev_desc);
+ if (ret)
+ return ret;
+
+ printf("A/B: slot boot fail, do reset\n");
+ do_reset(NULL, 0, 0, NULL);
+
+ /*
+ * Only do_reset() fail will arrive here, return a
+ * negative number, then enter maskrom in the caller.
+ */
+ return -EINVAL;
+}
--
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