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arch/x86/acpigen: Add new helper routines for XOR and get_rx_gpio

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Add new helper function in the acpigen library, that use the underlying
soc routines.

Change-Id: I8d65699d3c806007a50adcb51c5d84567ce451b7
Signed-off-by: Rajat Jain <rajatja@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39145
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Mathew King <mathewk@chromium.org>
This commit is contained in:
Rajat Jain
2020-02-26 11:02:53 -08:00
committed by Patrick Georgi
parent 4d9dd22bd1
commit 310623b2dd
3 changed files with 36 additions and 0 deletions
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17
src/arch/x86/acpigen.c
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@@ -1203,6 +1203,15 @@ void acpigen_write_or(uint8_t arg1, uint8_t arg2, uint8_t res)
acpigen_emit_byte(res);
}
/* Xor (arg1, arg2, res) */
void acpigen_write_xor(uint8_t arg1, uint8_t arg2, uint8_t res)
{
acpigen_emit_byte(XOR_OP);
acpigen_emit_byte(arg1);
acpigen_emit_byte(arg2);
acpigen_emit_byte(res);
}
/* And (arg1, arg2, res) */
void acpigen_write_and(uint8_t arg1, uint8_t arg2, uint8_t res)
{
@@ -1759,6 +1768,14 @@ int acpigen_disable_tx_gpio(struct acpi_gpio *gpio)
return acpigen_soc_clear_tx_gpio(gpio->pins[0]);
}
void acpigen_get_rx_gpio(struct acpi_gpio *gpio)
{
acpigen_soc_read_rx_gpio(gpio->pins[0]);
if (gpio->polarity == ACPI_GPIO_ACTIVE_LOW)
acpigen_write_xor(LOCAL0_OP, 1, LOCAL0_OP);
}
/* refer to ACPI 6.4.3.5.3 Word Address Space Descriptor section for details */
void acpigen_resource_word(u16 res_type, u16 gen_flags, u16 type_flags, u16 gran,
u16 range_min, u16 range_max, u16 translation, u16 length)