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/* SPDX-License-Identifier: GPL-2.0-or-later */
#include <amdblocks/acpimmio.h>
#include <amdblocks/smi.h>
#include <amdblocks/smm.h>
#include <cpu/x86/smm.h>
#include <soc/smi.h>
static void process_smi_sources(uint32_t reg)
{
const uint32_t status = smi_read32(reg);
int bit_zero = 32 / sizeof(uint32_t) * (reg - SMI_REG_SMISTS0);
void (*source_handler)(void);
int i;
for (i = 0 ; i < 32 ; i++) {
if (status & (1 << i)) {
source_handler = get_smi_source_handler(i + bit_zero);
if (source_handler)
source_handler();
}
}
if (reg == SMI_REG_SMISTS0)
if (status & GEVENT_MASK)
/* Gevent[23:0] are assumed to be mainboard-specific */
mainboard_smi_gpi(status & GEVENT_MASK);
/* Clear all events in this register */
smi_write32(reg, status);
}
void southbridge_smi_handler(void)
{
const uint16_t smi_src = smi_read16(SMI_REG_POINTER);
if (smi_src & SMI_STATUS_SRC_SCI)
/* Clear events to prevent re-entering SMI if event isn't handled */
clear_smi_sci_status();
if (smi_src & SMI_STATUS_SRC_0)
process_smi_sources(SMI_REG_SMISTS0);
if (smi_src & SMI_STATUS_SRC_1)
process_smi_sources(SMI_REG_SMISTS1);
if (smi_src & SMI_STATUS_SRC_2)
process_smi_sources(SMI_REG_SMISTS2);
if (smi_src & SMI_STATUS_SRC_3)
process_smi_sources(SMI_REG_SMISTS3);
if (smi_src & SMI_STATUS_SRC_4)
process_smi_sources(SMI_REG_SMISTS4);
}
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