[PATCH v3 1/3] lib: sbi: Allow platform to influence cold boot HART selection

[Wei Liang Lim]

>From 1f466b9e2945b57adc18d075b45b9ecdb304a38a Mon Sep 17 00:00:00 2001
From: Anup Patel <apatel at ventanamicro.com>
Date: Fri, 2 Dec 2022 14:23:22 +0530
Subject: [PATCH v3 2/3] platform: generic: Allow platform_override to select
 cold boot HART

We add a generic platform override callback to allow platform specific
selection of cold boot HART.

Signed-off-by: Anup Patel <apatel at ventanamicro.com>
---
 platform/generic/include/platform_override.h | 1 +
 platform/generic/platform.c                  | 9 +++++++++
 2 files changed, 10 insertions(+)

diff --git a/platform/generic/include/platform_override.h b/platform/generic/include/platform_override.h
index 7f1558d..21354e9 100644
--- a/platform/generic/include/platform_override.h
+++ b/platform/generic/include/platform_override.h
@@ -18,6 +18,7 @@ struct platform_override {
 	const struct fdt_match *match_table;
 	u64 (*features)(const struct fdt_match *match);
 	u64 (*tlbr_flush_limit)(const struct fdt_match *match);
+	bool (*cold_boot_allowed)(u32 hartid, const struct fdt_match *match);
 	int (*early_init)(bool cold_boot, const struct fdt_match *match);
 	int (*final_init)(bool cold_boot, const struct fdt_match *match);
 	void (*early_exit)(const struct fdt_match *match);
diff --git a/platform/generic/platform.c b/platform/generic/platform.c
index bfe15f0..80961f0 100644
--- a/platform/generic/platform.c
+++ b/platform/generic/platform.c
@@ -122,6 +122,14 @@ fail:
 		wfi();
 }
 
+static bool generic_cold_boot_allowed(u32 hartid)
+{
+	if (generic_plat && generic_plat->cold_boot_allowed)
+		return generic_plat && generic_plat->cold_boot_allowed(
+						hartid, generic_plat_match);
+	return TRUE;
+}
+
 static int generic_nascent_init(void)
 {
 	if (platform_has_mlevel_imsic)
@@ -261,6 +269,7 @@ static int generic_console_init(void)
 }
 
 const struct sbi_platform_operations platform_ops = {
+	.cold_boot_allowed	= generic_cold_boot_allowed,
 	.nascent_init		= generic_nascent_init,
 	.early_init		= generic_early_init,
 	.final_init		= generic_final_init,
-- 
2.25.1