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lib: utils: Add cache flush library

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The current RISC-V CMO only defines how to flush a cache block. However,
certain use cases, such as power management, may require flushing the
entire cache. Therefore, a framework is being introduced to allow vendors
to flush the entire cache using their own methods.

Signed-off-by: Nick Hu <nick.hu@sifive.com>
Reviewed-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20251020-cache-upstream-v7-1-69a132447d8a@sifive.com
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Nick Hu
2025-10-20 14:34:03 +08:00
committed by Anup Patel
parent ac16c6b604
commit 1207c7568f
5 changed files with 133 additions and 0 deletions
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2
lib/utils/Kconfig
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@@ -2,6 +2,8 @@
menu "Utils and Drivers Support"
source "$(OPENSBI_SRC_DIR)/lib/utils/cache/Kconfig"
source "$(OPENSBI_SRC_DIR)/lib/utils/cppc/Kconfig"
source "$(OPENSBI_SRC_DIR)/lib/utils/fdt/Kconfig"