88decca14f
Once platform code has filled in the (legacy) ACPI PM register map, added function will fill in the extended entries in FADT. TEST=samsung/lumpy and amd/mandolin FADT stays unchanged. Change-Id: I90925fce35458cf5480bfefc7cdddebd41b42058 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/74913 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin L Roth <gaumless@gmail.com>
72 lines
2.2 KiB
C
72 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#include <acpi/acpi.h>
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#include <console/console.h>
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#include <stdint.h>
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static void fill_x_pm_io(acpi_addr_t *x_pm_blk, int access_size, uint16_t ioport, uint8_t len)
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{
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x_pm_blk->space_id = ACPI_ADDRESS_SPACE_IO;
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x_pm_blk->bit_width = len * 8;
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x_pm_blk->bit_offset = 0;
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x_pm_blk->access_size = access_size;
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x_pm_blk->addrl = ioport;
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x_pm_blk->addrh = 0x0;
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}
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static void do_sanity_error(const char *func, const int line)
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{
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printk(BIOS_ERR, "ACPI: FADT error detected, %s line %d.\n", func, line);
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}
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#define fadt_sanity(x) do { if (!(x)) do_sanity_error(__func__, __LINE__); } while (0)
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void fill_fadt_extended_pm_io(acpi_fadt_t *fadt)
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{
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fadt_sanity(fadt->pm1a_evt_blk && (fadt->pm1_evt_len >= 4));
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/* Upper word is reserved and Linux complains about 32 bit. */
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fadt_sanity(fadt->pm1a_cnt_blk && (fadt->pm1_cnt_len == 2));
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fill_x_pm_io(&fadt->x_pm1a_evt_blk, ACPI_ACCESS_SIZE_WORD_ACCESS,
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fadt->pm1a_evt_blk, fadt->pm1_evt_len);
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fill_x_pm_io(&fadt->x_pm1a_cnt_blk, ACPI_ACCESS_SIZE_WORD_ACCESS,
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fadt->pm1a_cnt_blk, fadt->pm1_cnt_len);
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if (fadt->pm1b_evt_blk)
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fill_x_pm_io(&fadt->x_pm1b_evt_blk, ACPI_ACCESS_SIZE_WORD_ACCESS,
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fadt->pm1b_evt_blk, fadt->pm1_evt_len);
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if (fadt->pm1b_cnt_blk)
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fill_x_pm_io(&fadt->x_pm1b_cnt_blk, ACPI_ACCESS_SIZE_WORD_ACCESS,
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fadt->pm1b_cnt_blk, fadt->pm1_cnt_len);
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if (fadt->pm_tmr_blk) {
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fadt_sanity(fadt->pm_tmr_len == 4);
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fill_x_pm_io(&fadt->x_pm_tmr_blk, ACPI_ACCESS_SIZE_DWORD_ACCESS,
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fadt->pm_tmr_blk, fadt->pm_tmr_len);
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}
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if (fadt->pm2_cnt_blk)
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fill_x_pm_io(&fadt->x_pm2_cnt_blk, ACPI_ACCESS_SIZE_BYTE_ACCESS,
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fadt->pm2_cnt_blk, fadt->pm2_cnt_len);
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/*
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* Windows 10 requires x_gpe0_blk to be set starting with FADT revision 5.
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* The bit_width field intentionally overflows here.
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* The OSPM can instead use the values in `fadt->gpe0_blk{,_len}`, which
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* seems to work fine on Linux 5.0 and Windows 10.
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*
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* FIXME: GPE1_BASE is not initialised.
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*
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*/
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if (fadt->gpe0_blk)
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fill_x_pm_io(&fadt->x_gpe0_blk, ACPI_ACCESS_SIZE_BYTE_ACCESS,
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fadt->gpe0_blk, fadt->gpe0_blk_len);
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if (fadt->gpe1_blk)
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fill_x_pm_io(&fadt->x_gpe1_blk, ACPI_ACCESS_SIZE_BYTE_ACCESS,
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fadt->gpe1_blk, fadt->gpe1_blk_len);
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}
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