Change in coreboot[master]: acpi/acpigen: Constify CST functions' pointers

[Angel Pons (Code Review)]

Attention is currently required from: Lance Zhao, Jason Glenesk, Raul Rangel, Marshall Dawson, Tim Wawrzynczak, Patrick Rudolph, Felix Held.
Angel Pons has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/58391 )

Change subject: acpi/acpigen: Constify CST functions' pointers
......................................................................

acpi/acpigen: Constify CST functions' pointers

The `acpigen_write_CST_package` and `acpigen_write_CST_package_entry`
functions don't modify the provided C-state information. So, make the
pointer parameters read-only to enforce this. Also constify arguments
where possible.

Change-Id: I9e18d82ee6c16e4435b8fad6d467e58c33194cf4
Signed-off-by: Angel Pons 
---
M src/acpi/acpigen.c
M src/include/acpi/acpigen.h
M src/soc/amd/cezanne/acpi.c
M src/soc/amd/picasso/acpi.c
M src/soc/intel/baytrail/acpi.c
M src/soc/intel/braswell/acpi.c
6 files changed, 8 insertions(+), 8 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/91/58391/1

diff --git a/src/acpi/acpigen.c b/src/acpi/acpigen.c
index c8f1437..e0892e6 100644
--- a/src/acpi/acpigen.c
+++ b/src/acpi/acpigen.c
@@ -994,7 +994,7 @@
    acpigen_pop_len();
 }

-void acpigen_write_CST_package_entry(acpi_cstate_t *cstate)
+void acpigen_write_CST_package_entry(const acpi_cstate_t *cstate)
 {
    acpigen_write_package(4);
    acpigen_write_register_resource(&cstate->resource);
@@ -1004,7 +1004,7 @@
    acpigen_pop_len();
 }

-void acpigen_write_CST_package(acpi_cstate_t *cstate, int nentries)
+void acpigen_write_CST_package(const acpi_cstate_t *cstate, int nentries)
 {
    int i;
    acpigen_write_name("_CST");
diff --git a/src/include/acpi/acpigen.h b/src/include/acpi/acpigen.h
index c019130..cf14c7f 100644
--- a/src/include/acpi/acpigen.h
+++ b/src/include/acpi/acpigen.h
@@ -357,8 +357,8 @@
 void acpigen_write_pss_object(const struct acpi_sw_pstate *pstate_values, size_t nentries);
 typedef enum { SW_ALL = 0xfc, SW_ANY = 0xfd, HW_ALL = 0xfe } PSD_coord;
 void acpigen_write_PSD_package(u32 domain, u32 numprocs, PSD_coord coordtype);
-void acpigen_write_CST_package_entry(acpi_cstate_t *cstate);
-void acpigen_write_CST_package(acpi_cstate_t *entry, int nentries);
+void acpigen_write_CST_package_entry(const acpi_cstate_t *cstate);
+void acpigen_write_CST_package(const acpi_cstate_t *entry, int nentries);
 typedef enum { CSD_HW_ALL = 0xfe } CSD_coord;
 void acpigen_write_CSD_package(u32 domain, u32 numprocs, CSD_coord coordtype,
    			u32 index);
diff --git a/src/soc/amd/cezanne/acpi.c b/src/soc/amd/cezanne/acpi.c
index 3b3a88b..d390ca4 100644
--- a/src/soc/amd/cezanne/acpi.c
+++ b/src/soc/amd/cezanne/acpi.c
@@ -279,7 +279,7 @@
    	.addrl = PS_STS_REG,
    };

-	acpi_cstate_t cstate_info[] = {
+	const acpi_cstate_t cstate_info[] = {
    	[0] = {
    		.ctype = 1,
    		.latency = 1,
diff --git a/src/soc/amd/picasso/acpi.c b/src/soc/amd/picasso/acpi.c
index 99c1648..c0808d9 100644
--- a/src/soc/amd/picasso/acpi.c
+++ b/src/soc/amd/picasso/acpi.c
@@ -289,7 +289,7 @@
    	.addrl = PS_STS_REG,
    };

-	acpi_cstate_t cstate_info[] = {
+	const acpi_cstate_t cstate_info[] = {
    	[0] = {
    		.ctype = 1,
    		.latency = 1,
diff --git a/src/soc/intel/baytrail/acpi.c b/src/soc/intel/baytrail/acpi.c
index b91134f..029d07f 100644
--- a/src/soc/intel/baytrail/acpi.c
+++ b/src/soc/intel/baytrail/acpi.c
@@ -28,7 +28,7 @@
    }

/* C-state map without S0ix */
-static acpi_cstate_t cstate_map[] = {
+static const acpi_cstate_t cstate_map[] = {
    {
    	/* C1 */
    	.ctype = 1, /* ACPI C1 */
diff --git a/src/soc/intel/braswell/acpi.c b/src/soc/intel/braswell/acpi.c
index 757358d..37b9152 100644
--- a/src/soc/intel/braswell/acpi.c
+++ b/src/soc/intel/braswell/acpi.c
@@ -36,7 +36,7 @@
    }

/* C-state map without S0ix */
-static acpi_cstate_t cstate_map[] = {
+static const acpi_cstate_t cstate_map[] = {
    {
    	/* C1 */
    	.ctype = 1, /* ACPI C1 */