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34 lines
1.2 KiB
Diff
34 lines
1.2 KiB
Diff
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From 6988ae7c909dc342322a82daaa3a95b78d038305 Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.com>
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Date: Mon, 11 Dec 2023 16:58:07 +0000
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Subject: [PATCH] firmware/psci: Pass given partition number through
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Pi 5 uses BL31 as its armstub file, so the reset goes via PSCI. Parse
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any "reboot" parameter as a partition number to reboot into.
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N.B. This code path is only used if reboot mode has been set to warm
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or soft.
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Signed-off-by: Phil Elwell <phil@raspberrypi.com>
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---
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drivers/firmware/psci/psci.c | 9 ++++++++-
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1 file changed, 8 insertions(+), 1 deletion(-)
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--- a/drivers/firmware/psci/psci.c
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+++ b/drivers/firmware/psci/psci.c
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@@ -314,7 +314,14 @@ static int psci_sys_reset(struct notifie
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* reset_type[30:0] = 0 (SYSTEM_WARM_RESET)
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* cookie = 0 (ignored by the implementation)
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*/
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- invoke_psci_fn(PSCI_FN_NATIVE(1_1, SYSTEM_RESET2), 0, 0, 0);
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+ // Allow extra arguments separated by spaces after
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+ // the partition number.
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+ unsigned long val;
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+ u8 partition = 0;
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+
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+ if (data && sscanf(data, "%lu", &val) == 1 && val < 63)
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+ partition = val;
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+ invoke_psci_fn(PSCI_FN_NATIVE(1_1, SYSTEM_RESET2), 0, partition, 0);
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} else {
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invoke_psci_fn(PSCI_0_2_FN_SYSTEM_RESET, 0, 0, 0);
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}
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