/* SPDX-License-Identifier: GPL-2.0-only */ #include <acpi/acpi.h> #include <console/console.h> #include <stdint.h> static void fill_x_pm_io(acpi_addr_t *x_pm_blk, int access_size, uint16_t ioport, uint8_t len) { x_pm_blk->space_id = ACPI_ADDRESS_SPACE_IO; x_pm_blk->bit_width = len * 8; x_pm_blk->bit_offset = 0; x_pm_blk->access_size = access_size; x_pm_blk->addrl = ioport; x_pm_blk->addrh = 0x0; } static void do_sanity_error(const char *func, const int line) { printk(BIOS_ERR, "ACPI: FADT error detected, %s line %d.\n", func, line); } #define fadt_sanity(x) do { if (!(x)) do_sanity_error(__func__, __LINE__); } while (0) void fill_fadt_extended_pm_io(acpi_fadt_t *fadt) { fadt_sanity(fadt->pm1a_evt_blk && (fadt->pm1_evt_len >= 4)); /* Upper word is reserved and Linux complains about 32 bit. */ fadt_sanity(fadt->pm1a_cnt_blk && (fadt->pm1_cnt_len == 2)); fill_x_pm_io(&fadt->x_pm1a_evt_blk, ACPI_ACCESS_SIZE_WORD_ACCESS, fadt->pm1a_evt_blk, fadt->pm1_evt_len); fill_x_pm_io(&fadt->x_pm1a_cnt_blk, ACPI_ACCESS_SIZE_WORD_ACCESS, fadt->pm1a_cnt_blk, fadt->pm1_cnt_len); if (fadt->pm1b_evt_blk) fill_x_pm_io(&fadt->x_pm1b_evt_blk, ACPI_ACCESS_SIZE_WORD_ACCESS, fadt->pm1b_evt_blk, fadt->pm1_evt_len); if (fadt->pm1b_cnt_blk) fill_x_pm_io(&fadt->x_pm1b_cnt_blk, ACPI_ACCESS_SIZE_WORD_ACCESS, fadt->pm1b_cnt_blk, fadt->pm1_cnt_len); if (fadt->pm_tmr_blk) { fadt_sanity(fadt->pm_tmr_len == 4); fill_x_pm_io(&fadt->x_pm_tmr_blk, ACPI_ACCESS_SIZE_DWORD_ACCESS, fadt->pm_tmr_blk, fadt->pm_tmr_len); } if (fadt->pm2_cnt_blk) fill_x_pm_io(&fadt->x_pm2_cnt_blk, ACPI_ACCESS_SIZE_BYTE_ACCESS, fadt->pm2_cnt_blk, fadt->pm2_cnt_len); /* * Windows 10 requires x_gpe0_blk to be set starting with FADT revision 5. * The bit_width field intentionally overflows here. * The OSPM can instead use the values in `fadt->gpe0_blk{,_len}`, which * seems to work fine on Linux 5.0 and Windows 10. * * FIXME: GPE1_BASE is not initialised. * */ if (fadt->gpe0_blk) fill_x_pm_io(&fadt->x_gpe0_blk, ACPI_ACCESS_SIZE_BYTE_ACCESS, fadt->gpe0_blk, fadt->gpe0_blk_len); if (fadt->gpe1_blk) fill_x_pm_io(&fadt->x_gpe1_blk, ACPI_ACCESS_SIZE_BYTE_ACCESS, fadt->gpe1_blk, fadt->gpe1_blk_len); }