[S] Change in coreboot[master]: acpi: Add warning message when timeout in acpigen_write_delay_until_n...

[Cliff Huang (Code Review)]

Cliff Huang has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/73348 )

Change subject: acpi: Add warning message when timeout in acpigen_write_delay_until_namestr_int()
......................................................................

acpi: Add warning message when timeout in acpigen_write_delay_until_namestr_int()

The ACPI should print warning message to kernel when timeout during the
loop waiting for the condition to occur

This timeout message won't be displayed when this function are used as delay
loop, (ie. without checking variable condition)

To enable this print to kernel log:
    echo 1 > /sys/module/acpi/parameters/aml_debug_output

ex: Waiting for variable L23E = 0; the max loop count( Local7) = 8
will generate ACPI code:

Local7 = 0x08
    While ((Local7 > Zero))
    {
        If ((L23E == Zero))
        {
            Break
        }

Sleep (0x10)
        Local7--
        If ((Local7 == Zero))
        {
            Debug = "WARN: Wait loop Timeout! variable = L23E"
        }
    }

BRANCH=firmware-brya-14505.B
TEST=Boot to OS and check that the Debug print is added to the function.

Signed-off-by: Cliff Huang 
Change-Id: I3843e51988527e99822017d1b5f653ff2eaa7958
---
M src/acpi/acpigen.c
1 file changed, 47 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/48/73348/1

diff --git a/src/acpi/acpigen.c b/src/acpi/acpigen.c
index 9d23e57..26280e2 100644
--- a/src/acpi/acpigen.c
+++ b/src/acpi/acpigen.c
@@ -2330,4 +2330,10 @@
    acpigen_emit_byte(DECREMENT_OP);
    acpigen_emit_byte(LOCAL7_OP);
    acpigen_pop_len(); /* While */
+
+	if (name) {
+		acpigen_write_if_lequal_op_op(LOCAL7_OP, ZERO_OP);
+		acpigen_write_debug_sprintf("WARN: Wait loop Timeout! variable = %s", name);
+		acpigen_pop_len(); /* If */
+	}
 }