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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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7b8e0188fa
This patch implements the write_sec callback that handle PL310 secure registers writes. This callback is just a stub for now, to avoid system crash. Later, it could handle SMC calls so that TZ handles the needed writes. Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
/*
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* Copyright (C) 2013 STMicroelectronics (R&D) Limited.
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* Author(s): Srinivas Kandagatla <srinivas.kandagatla@st.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/irq.h>
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#include <linux/of_platform.h>
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#include <asm/hardware/cache-l2x0.h>
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#include <asm/mach/arch.h>
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#include "smp.h"
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static const char *const stih41x_dt_match[] __initconst = {
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"st,stih415",
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"st,stih416",
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"st,stih407",
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"st,stih410",
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"st,stih418",
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NULL
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};
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static void sti_l2_write_sec(unsigned long val, unsigned reg)
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{
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/*
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* We can't write to secure registers as we are in non-secure
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* mode, until we have some SMI service available.
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*/
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}
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DT_MACHINE_START(STM, "STi SoC with Flattened Device Tree")
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.dt_compat = stih41x_dt_match,
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.l2c_aux_val = L2C_AUX_CTRL_SHARED_OVERRIDE |
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L310_AUX_CTRL_DATA_PREFETCH |
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L310_AUX_CTRL_INSTR_PREFETCH |
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L2C_AUX_CTRL_WAY_SIZE(4),
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.l2c_aux_mask = 0xc0000fff,
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.smp = smp_ops(sti_smp_ops),
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.l2c_write_sec = sti_l2_write_sec,
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MACHINE_END
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