[U-Boot] [PATCH 21/26] x86: baytrail: Generate ACPI FADT/MADT tables

[Stefan Roese]

Hi Bin,

On 02.05.2016 09:33, Bin Meng wrote:
> FADT/MADT tables are platform specific. Generate them for BayTrail.
>
> Signed-off-by: Bin Meng <bmeng.cn at gmail.com>
> ---
>
>   arch/x86/cpu/baytrail/Makefile |   1 +
>   arch/x86/cpu/baytrail/acpi.c   | 162 +++++++++++++++++++++++++++++++++++++++++
>   2 files changed, 163 insertions(+)
>   create mode 100644 arch/x86/cpu/baytrail/acpi.c
>
> diff --git a/arch/x86/cpu/baytrail/Makefile b/arch/x86/cpu/baytrail/Makefile
> index 5be5491..a0216f3 100644
> --- a/arch/x86/cpu/baytrail/Makefile
> +++ b/arch/x86/cpu/baytrail/Makefile
> @@ -8,3 +8,4 @@ obj-y += cpu.o
>   obj-y += early_uart.o
>   obj-y += fsp_configs.o
>   obj-y += valleyview.o
> +obj-$(CONFIG_GENERATE_ACPI_TABLE) += acpi.o
> diff --git a/arch/x86/cpu/baytrail/acpi.c b/arch/x86/cpu/baytrail/acpi.c
> new file mode 100644
> index 0000000..a9c79f0
> --- /dev/null
> +++ b/arch/x86/cpu/baytrail/acpi.c
> @@ -0,0 +1,162 @@
> +/*
> + * Copyright (C) 2016, Bin Meng <bmeng.cn at gmail.com>
> + *
> + * SPDX-License-Identifier:	GPL-2.0+
> + */
> +
> +#include <common.h>
> +#include <asm/acpi_table.h>
> +#include <asm/ioapic.h>
> +#include <asm/mpspec.h>
> +#include <asm/tables.h>
> +#include <asm/arch/iomap.h>
> +
> +void acpi_create_fadt(struct acpi_fadt *fadt, struct acpi_facs *facs,
> +		      void *dsdt)
> +{
> +	struct acpi_table_header *header = &(fadt->header);
> +	u16 pmbase = ACPI_BASE_ADDRESS;
> +
> +	memset((void *)fadt, 0, sizeof(struct acpi_fadt));
> +
> +	acpi_fill_header(header, "FACP");
> +	header->length = sizeof(struct acpi_fadt);
> +	header->revision = 3;
> +
> +	fadt->firmware_ctrl = (u32)facs;
> +	fadt->dsdt = (u32)dsdt;
> +	fadt->preferred_pm_profile = ACPI_PM_MOBILE;
> +	fadt->sci_int = 9;
> +	fadt->smi_cmd = 0;
> +	fadt->acpi_enable = 0;
> +	fadt->acpi_disable = 0;
> +	fadt->s4bios_req = 0x0;
> +	fadt->pstate_cnt = 0;
> +	fadt->pm1a_evt_blk = pmbase;
> +	fadt->pm1b_evt_blk = 0x0;
> +	fadt->pm1a_cnt_blk = pmbase + 0x4;
> +	fadt->pm1b_cnt_blk = 0x0;
> +	fadt->pm2_cnt_blk = pmbase + 0x50;
> +	fadt->pm_tmr_blk = pmbase + 0x8;
> +	fadt->gpe0_blk = pmbase + 0x20;
> +	fadt->gpe1_blk = 0;
> +	fadt->pm1_evt_len = 4;
> +	fadt->pm1_cnt_len = 2;
> +	fadt->pm2_cnt_len = 1;
> +	fadt->pm_tmr_len = 4;
> +	fadt->gpe0_blk_len = 16;
> +	fadt->gpe1_blk_len = 0;
> +	fadt->gpe1_base = 0;
> +	fadt->cst_cnt = 0;
> +	fadt->p_lvl3_lat = 87;
> +	fadt->flush_size = 1024;
> +	fadt->flush_stride = 16;
> +	fadt->duty_offset = 1;
> +	fadt->day_alrm = 0xd;
> +	fadt->mon_alrm = 0x00;
> +	fadt->century = 0x00;
> +	fadt->iapc_boot_arch = ACPI_FADT_LEGACY_DEVICES | ACPI_FADT_8042;
> +
> +	fadt->flags = ACPI_FADT_WBINVD |
> +		ACPI_FADT_C1_SUPPORTED |
> +		ACPI_FADT_SLEEP_BUTTON |
> +		ACPI_FADT_RESET_REGISTER |
> +		ACPI_FADT_SEALED_CASE |
> +		ACPI_FADT_S4_RTC_WAKE |
> +		ACPI_FADT_PLATFORM_CLOCK;
> +	fadt->reset_reg.space_id = 1;
> +	fadt->reset_reg.bit_width = 8;
> +	fadt->reset_reg.bit_offset = 0;
> +	fadt->reset_reg.access_size = ACPI_ACCESS_SIZE_BYTE_ACCESS;
> +	fadt->reset_reg.addrl = 0xcf9;
> +	fadt->reset_reg.addrh = 0;
> +	fadt->reset_value = 6;
> +	fadt->x_firmware_ctl_l = (u32)facs;
> +	fadt->x_firmware_ctl_h = 0;
> +	fadt->x_dsdt_l = (u32)dsdt;
> +	fadt->x_dsdt_h = 0;
> +
> +	fadt->x_pm1a_evt_blk.space_id = 1;
> +	fadt->x_pm1a_evt_blk.bit_width = 32;
> +	fadt->x_pm1a_evt_blk.bit_offset = 0;
> +	fadt->x_pm1a_evt_blk.access_size = ACPI_ACCESS_SIZE_DWORD_ACCESS;
> +	fadt->x_pm1a_evt_blk.addrl = pmbase;
> +	fadt->x_pm1a_evt_blk.addrh = 0x0;
> +
> +	fadt->x_pm1b_evt_blk.space_id = 1;
> +	fadt->x_pm1b_evt_blk.bit_width = 0;
> +	fadt->x_pm1b_evt_blk.bit_offset = 0;
> +	fadt->x_pm1b_evt_blk.access_size = 0;
> +	fadt->x_pm1b_evt_blk.addrl = 0x0;
> +	fadt->x_pm1b_evt_blk.addrh = 0x0;
> +
> +	fadt->x_pm1a_cnt_blk.space_id = 1;
> +	fadt->x_pm1a_cnt_blk.bit_width = 16;
> +	fadt->x_pm1a_cnt_blk.bit_offset = 0;
> +	fadt->x_pm1a_cnt_blk.access_size = ACPI_ACCESS_SIZE_WORD_ACCESS;
> +	fadt->x_pm1a_cnt_blk.addrl = pmbase + 0x4;
> +	fadt->x_pm1a_cnt_blk.addrh = 0x0;
> +
> +	fadt->x_pm1b_cnt_blk.space_id = 1;
> +	fadt->x_pm1b_cnt_blk.bit_width = 0;
> +	fadt->x_pm1b_cnt_blk.bit_offset = 0;
> +	fadt->x_pm1b_cnt_blk.access_size = 0;
> +	fadt->x_pm1b_cnt_blk.addrl = 0x0;
> +	fadt->x_pm1b_cnt_blk.addrh = 0x0;
> +
> +	fadt->x_pm2_cnt_blk.space_id = 1;
> +	fadt->x_pm2_cnt_blk.bit_width = 8;
> +	fadt->x_pm2_cnt_blk.bit_offset = 0;
> +	fadt->x_pm2_cnt_blk.access_size = ACPI_ACCESS_SIZE_BYTE_ACCESS;
> +	fadt->x_pm2_cnt_blk.addrl = pmbase + 0x50;
> +	fadt->x_pm2_cnt_blk.addrh = 0x0;
> +
> +	fadt->x_pm_tmr_blk.space_id = 1;
> +	fadt->x_pm_tmr_blk.bit_width = 32;
> +	fadt->x_pm_tmr_blk.bit_offset = 0;
> +	fadt->x_pm_tmr_blk.access_size = ACPI_ACCESS_SIZE_DWORD_ACCESS;
> +	fadt->x_pm_tmr_blk.addrl = pmbase + 0x8;
> +	fadt->x_pm_tmr_blk.addrh = 0x0;
> +
> +	fadt->x_gpe0_blk.space_id = 1;
> +	fadt->x_gpe0_blk.bit_width = 128;
> +	fadt->x_gpe0_blk.bit_offset = 0;
> +	fadt->x_gpe0_blk.access_size = ACPI_ACCESS_SIZE_DWORD_ACCESS;
> +	fadt->x_gpe0_blk.addrl = pmbase + 0x20;
> +	fadt->x_gpe0_blk.addrh = 0x0;
> +
> +	fadt->x_gpe1_blk.space_id = 1;
> +	fadt->x_gpe1_blk.bit_width = 0;
> +	fadt->x_gpe1_blk.bit_offset = 0;
> +	fadt->x_gpe1_blk.access_size = 0;
> +	fadt->x_gpe1_blk.addrl = 0x0;
> +	fadt->x_gpe1_blk.addrh = 0x0;
> +
> +	header->checksum = table_compute_checksum(fadt, header->length);
> +}
> +
> +u32 acpi_madt_irq_overrides(u32 current)
> +{
> +	struct acpi_madt_irqoverride *irqovr;
> +	u16 sci_flags = MP_IRQ_TRIGGER_LEVEL | MP_IRQ_POLARITY_HIGH;
> +
> +	irqovr = (void *)current;
> +	current += acpi_create_madt_irqoverride(irqovr, 0, 0, 2, 0);
> +
> +	irqovr = (void *)current;
> +	current += acpi_create_madt_irqoverride(irqovr, 0, 9, 9, sci_flags);
> +
> +	return current;
> +}
> +
> +u32 acpi_fill_madt(u32 current)
> +{
> +	current = acpi_create_madt_lapics(current);

I'm not sure if you need '+=' here?

> +
> +	current += acpi_create_madt_ioapic((struct acpi_madt_ioapic *)current,
> +			2, IO_APIC_ADDR, 0);
> +
> +	current = acpi_madt_irq_overrides(current);

Here '+=' definitely seems to be necessary.

Thanks,
Stefan