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acpigen: Use implicit length patching in acpigen_write_resourcetemplate_footer 

Change-Id: Ic177720b074fed13a17454dcb6765ac298365624
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/7366
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
This commit is contained in:
Vladimir Serbinenko 2014-11-09 03:37:28 +01:00
parent 663be6e9f2
commit 9acc1e8dfc
3 changed files with 22 additions and 20 deletions
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22
src/arch/x86/boot/acpigen.c
View File

@ -382,13 +382,13 @@ int acpigen_write_empty_PTC(void)
/* ControlRegister */
rlen = acpigen_write_resourcetemplate_header();
rlen += acpigen_write_register(&addr);
len += acpigen_write_resourcetemplate_footer(rlen);
len += acpigen_write_resourcetemplate_footer();
len += rlen;
/* StatusRegister */
rlen = acpigen_write_resourcetemplate_header();
rlen += acpigen_write_register(&addr);
len += acpigen_write_resourcetemplate_footer(rlen);
len += acpigen_write_resourcetemplate_footer();
len += rlen;
acpigen_patch_len(len - 1);
@ -535,7 +535,7 @@ int acpigen_write_CST_package_entry(acpi_cstate_t *cstate)
acpigen_write_register(&cstate->resource);
end = acpigen_get_current();
len += end - start;
len += acpigen_write_resourcetemplate_footer(len);
len += acpigen_write_resourcetemplate_footer();
len += len0;
len += acpigen_write_dword(cstate->ctype);
len += acpigen_write_dword(cstate->latency);
@ -713,20 +713,24 @@ int acpigen_write_resourcetemplate_header(void)
return len;
}
int acpigen_write_resourcetemplate_footer(int len)
int acpigen_write_resourcetemplate_footer(void)
{
char *p = len_stack[--ltop];
int len;
/*
* end tag (acpi 4.0 Section 6.4.2.8)
* 0x79 <checksum>
* 0x00 is treated as a good checksum according to the spec
* and is what iasl generates.
*/
len += acpigen_emit_byte(0x79);
len += acpigen_emit_byte(0x00);
acpigen_emit_byte(0x79);
acpigen_emit_byte(0x00);
len = gencurrent - p;
/* patch len word */
p[0] = (len-6) & 0xff;
p[1] = ((len-6) >> 8) & 0xff;
p[0] = len & 0xff;
p[1] = (len >> 8) & 0xff;
/* patch len field */
acpigen_patch_len(len-1);
return 2;
@ -773,7 +777,7 @@ int acpigen_write_mainboard_resource_template(void)
end = acpigen_get_current();
len += end-start;
len += acpigen_write_resourcetemplate_footer(len);
len += acpigen_write_resourcetemplate_footer();
return len;
}

2
src/arch/x86/include/arch/acpigen.h
View File

@ -63,7 +63,7 @@ int acpigen_write_mem32fixed(int readwrite, u32 base, u32 size);
int acpigen_write_io16(u16 min, u16 max, u8 align, u8 len, u8 decode16);
int acpigen_write_register(acpi_addr_t *addr);
int acpigen_write_resourcetemplate_header(void);
int acpigen_write_resourcetemplate_footer(int len);
int acpigen_write_resourcetemplate_footer(void);
int acpigen_write_mainboard_resource_template(void);
int acpigen_write_mainboard_resources(const char *scope, const char *name);
int acpigen_write_irq(u16 mask);

18
src/drivers/lenovo/wacom.c
View File

@ -93,8 +93,6 @@ void
drivers_lenovo_serial_ports_ssdt_generate(const char *scope,
int have_dock_serial)
{
int reslen;
acpigen_write_scope(scope);
if (drivers_lenovo_is_wacom_present()) {
@ -105,11 +103,11 @@ drivers_lenovo_serial_ports_ssdt_generate(const char *scope,
acpigen_write_name("_CRS");
reslen = acpigen_write_resourcetemplate_header();
reslen += acpigen_write_io16(0x200, 0x200, 1, 8, 1);
reslen += acpigen_write_irq((1 << 5));
acpigen_write_resourcetemplate_header();
acpigen_write_io16(0x200, 0x200, 1, 8, 1);
acpigen_write_irq((1 << 5));
acpigen_write_resourcetemplate_footer(reslen);
acpigen_write_resourcetemplate_footer();
acpigen_write_method("_STA", 0);
/* return */
@ -131,11 +129,11 @@ drivers_lenovo_serial_ports_ssdt_generate(const char *scope,
acpigen_write_name("_CRS");
reslen = acpigen_write_resourcetemplate_header();
reslen += acpigen_write_io16(0x3f8, 0x3f8, 1, 8, 1);
reslen += acpigen_write_irq(1 << 4);
acpigen_write_resourcetemplate_header();
acpigen_write_io16(0x3f8, 0x3f8, 1, 8, 1);
acpigen_write_irq(1 << 4);
acpigen_write_resourcetemplate_footer(reslen);
acpigen_write_resourcetemplate_footer();
/* method op */
acpigen_write_method("_STA", 0);