feat(pre-si): modify global variable to const for RAM optimizations

pal/baremetal/base/src/pal_dma.c

@@ -1,5 +1,5 @@
 /** @file
- * Copyright (c) 2023-2025, Arm Limited or its affiliates. All rights reserved.
+ * Copyright (c) 2023-2026, Arm Limited or its affiliates. All rights reserved.
  * SPDX-License-Identifier : Apache-2.0
 
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -21,7 +21,7 @@
 #include "pal_pcie_enum.h"
 
 
-extern DMA_INFO_TABLE platform_dma_cfg;
+extern const DMA_INFO_TABLE platform_dma_cfg;
 
 
 /**

pal/baremetal/base/src/pal_gic.c

@@ -1,5 +1,5 @@
 /** @file
- * Copyright (c) 2023-2025, Arm Limited or its affiliates. All rights reserved.
+ * Copyright (c) 2023-2026, Arm Limited or its affiliates. All rights reserved.
  * SPDX-License-Identifier : Apache-2.0
 
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -18,7 +18,7 @@
 #include "pal_common_support.h"
 #include "platform_override_struct.h"
 
-extern PLATFORM_OVERRIDE_GIC_INFO_TABLE platform_gic_cfg;
+extern const PLATFORM_OVERRIDE_GIC_INFO_TABLE platform_gic_cfg;
 
 /**
   @brief  Populate information about the GIC sub-system at the input address.

pal/baremetal/base/src/pal_hmat.c

@@ -19,8 +19,8 @@
 #include "pal_pcie_enum.h"
 #include "platform_override_struct.h"
 
-extern PLATFORM_OVERRIDE_HMAT_INFO_TABLE platform_hmat_cfg;
-extern PLATFORM_OVERRIDE_HMAT_MEM_TABLE platform_hmat_mem_cfg;
+extern const PLATFORM_OVERRIDE_HMAT_INFO_TABLE platform_hmat_cfg;
+extern const PLATFORM_OVERRIDE_HMAT_MEM_TABLE platform_hmat_mem_cfg;
 
 /**
   @brief  This API prints hmat info table entries.

pal/baremetal/base/src/pal_iovirt.c

@@ -20,11 +20,11 @@
 #include "platform_override_fvp.h"
 #include "platform_override_struct.h"
 
-extern PLATFORM_OVERRIDE_IOVIRT_INFO_TABLE platform_iovirt_cfg;
-extern PLATFORM_OVERRIDE_NODE_DATA platform_node_type;
-extern PLATFORM_OVERRIDE_PMCG_NODE_DATA platform_pmcg_node_data;
-extern PLATFORM_OVERRIDE_NAMED_NODE_DATA platform_named_node_data;
-extern PLATFORM_OVERRIDE_CS_COMP_NODE_DATA platform_cs_comp_node_data;
+extern const PLATFORM_OVERRIDE_IOVIRT_INFO_TABLE platform_iovirt_cfg;
+extern const PLATFORM_OVERRIDE_NODE_DATA platform_node_type;
+extern const PLATFORM_OVERRIDE_PMCG_NODE_DATA platform_pmcg_node_data;
+extern const PLATFORM_OVERRIDE_NAMED_NODE_DATA platform_named_node_data;
+extern const PLATFORM_OVERRIDE_CS_COMP_NODE_DATA platform_cs_comp_node_data;
 
 uint64_t
 pal_iovirt_get_rc_smmu_base (
@@ -102,7 +102,7 @@ pal_iovirt_get_rc_smmu_base (
   @return  1 if the IDs are unique else 0
 **/
 static uint8_t
-smmu_ctx_int_distinct(uint64_t *ctx_int, uint8_t ctx_int_cnt) {
+smmu_ctx_int_distinct(const uint64_t *ctx_int, uint8_t ctx_int_cnt) {
   uint8_t i, j;
   for(i = 0; i < ctx_int_cnt - 1; i++) {
     for(j = i + 1; j < ctx_int_cnt; j++) {

pal/baremetal/base/src/pal_mpam.c

@@ -19,9 +19,9 @@
 #include "pal_common_support.h"
 #include "pal_pcie_enum.h"
 
-extern SRAT_INFO_TABLE platform_srat_cfg;
-extern PLATFORM_OVERRIDE_SRAT_NODE_INFO_TABLE platform_srat_node_type;
-extern PLATFORM_OVERRIDE_MPAM_INFO_TABLE platform_mpam_cfg;
+extern const SRAT_INFO_TABLE platform_srat_cfg;
+extern const PLATFORM_OVERRIDE_SRAT_NODE_INFO_TABLE platform_srat_node_type;
+extern const PLATFORM_OVERRIDE_MPAM_INFO_TABLE platform_mpam_cfg;
 
 /**
   @brief  Display MPAM info table details

pal/baremetal/base/src/pal_pcc.c

@@ -19,7 +19,7 @@
 #include "pal_pcie_enum.h"
 #include "platform_override_struct.h"
 
-extern PLATFORM_OVERRIDE_PCC_INFO_TABLE platform_pcc_cfg;
+extern const PLATFORM_OVERRIDE_PCC_INFO_TABLE platform_pcc_cfg;
 
 /**
   @brief  This API prints cache info table and cache entry indices for each pe.

pal/baremetal/base/src/pal_pcie.c

@@ -1,5 +1,5 @@
 /** @file
- * Copyright (c) 2023-2025, Arm Limited or its affiliates. All rights reserved.
+ * Copyright (c) 2023-2026, Arm Limited or its affiliates. All rights reserved.
  * SPDX-License-Identifier : Apache-2.0
 
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -20,8 +20,8 @@
 #include "platform_override_struct.h"
 
 extern pcie_device_bdf_table *g_pcie_bdf_table;
-extern PCIE_INFO_TABLE platform_pcie_cfg;
-extern PCIE_READ_TABLE platform_pcie_device_hierarchy;
+extern const PCIE_INFO_TABLE platform_pcie_cfg;
+extern const PCIE_READ_TABLE platform_pcie_device_hierarchy;
 extern PERIPHERAL_INFO_TABLE  *g_peripheral_info_table;
 
 uint64_t

pal/baremetal/base/src/pal_pcie_enumeration.c

@@ -19,7 +19,7 @@
 #include "platform_override_struct.h"
 
 extern PCIE_INFO_TABLE *g_pcie_info_table;
-extern PCIE_ROOT_INFO_TABLE platform_root_pcie_cfg;
+extern const PCIE_ROOT_INFO_TABLE platform_root_pcie_cfg;
 
 uint32_t pcie_index = 0, enumerate = 1;
 /*64-bit address initialisation*/

pal/baremetal/base/src/pal_pe.c

@@ -20,8 +20,8 @@
 #include "platform_override_struct.h"
 
 
-extern PE_INFO_TABLE platform_pe_cfg;
-extern PE_SMBIOS_PROCESSOR_INFO_TABLE platform_smbios_cfg;
+extern const PE_INFO_TABLE platform_pe_cfg;
+extern const PE_SMBIOS_PROCESSOR_INFO_TABLE platform_smbios_cfg;
 extern PE_INFO_TABLE *g_pe_info_table;
 extern int32_t gPsciConduit;
 

pal/baremetal/base/src/pal_peripherals.c

@@ -19,10 +19,10 @@
 #include "pal_common_support.h"
 #include "platform_override_struct.h"
 
-extern PLATFORM_OVERRIDE_UART_INFO_TABLE platform_uart_cfg;
-extern PLATFORM_OVERRIDE_SATA_INFO_TABLE platform_sata_cfg;
-extern PLATFORM_OVERRIDE_MEMORY_INFO_TABLE  platform_mem_cfg;
-extern PCIE_INFO_TABLE platform_pcie_cfg;
+extern const PLATFORM_OVERRIDE_UART_INFO_TABLE platform_uart_cfg;
+extern const PLATFORM_OVERRIDE_SATA_INFO_TABLE platform_sata_cfg;
+extern const PLATFORM_OVERRIDE_MEMORY_INFO_TABLE  platform_mem_cfg;
+extern const PCIE_INFO_TABLE platform_pcie_cfg;
 
 #define USB_CLASSCODE   0x0C0300
 #define SATA_CLASSCODE  0x010600

pal/baremetal/base/src/pal_pmu.c

@@ -18,8 +18,8 @@
 #include "platform_override_struct.h"
 #include "pal_common_support.h"
 
-extern PLATFORM_OVERRIDE_PMU_INFO_TABLE platform_pmu_cfg;
-extern PLATFORM_OVERRIDE_EVENT_DETAILS event_list[];
+extern const PLATFORM_OVERRIDE_PMU_INFO_TABLE platform_pmu_cfg;
+extern const PLATFORM_OVERRIDE_EVENT_DETAILS event_list[];
 
 /**
   @brief  Display PMU info table details

pal/baremetal/base/src/pal_pptt.c

@@ -18,8 +18,8 @@
 #include "pal_pcie_enum.h"
 #include "platform_override_struct.h"
 
-extern PLATFORM_OVERRIDE_CACHE_INFO_TABLE platform_cache_cfg;
-extern PLATFORM_OVERRIDE_PPTT_INFO_TABLE platform_pptt_cfg;
+extern const PLATFORM_OVERRIDE_CACHE_INFO_TABLE platform_cache_cfg;
+extern const PLATFORM_OVERRIDE_PPTT_INFO_TABLE platform_pptt_cfg;
 
 /**
   @brief  This API prints cache info table and cache entry indices for each pe.

pal/baremetal/base/src/pal_ras.c

@@ -18,12 +18,12 @@
 #include "pal_common_support.h"
 #include "platform_override_struct.h"
 
-extern RAS_INFO_TABLE platform_ras_cfg;
-extern PLATFORM_OVERRIDE_RAS_NODE_DATA_INFO platform_ras_node_data;
-extern PLATFORM_OVERRIDE_RAS_NODE_INTERFACE_INFO platform_ras_node_interface;
-extern PLATFORM_OVERRIDE_RAS_NODE_INTERRUPT_INFO platform_ras_node_interrupt;
+extern const RAS_INFO_TABLE platform_ras_cfg;
+extern const PLATFORM_OVERRIDE_RAS_NODE_DATA_INFO platform_ras_node_data;
+extern const PLATFORM_OVERRIDE_RAS_NODE_INTERFACE_INFO platform_ras_node_interface;
+extern const PLATFORM_OVERRIDE_RAS_NODE_INTERRUPT_INFO platform_ras_node_interrupt;
 
-extern PLATFORM_OVERRIDE_RAS2_INFO_TABLE platform_ras2_cfg;
+extern const PLATFORM_OVERRIDE_RAS2_INFO_TABLE platform_ras2_cfg;
 
 /**
   @brief  Platform Defined way of Timeout/Wait loop

pal/baremetal/base/src/pal_timer_wd.c

@@ -1,5 +1,5 @@
 /** @file
- * Copyright (c) 2024-2025, Arm Limited or its affiliates. All rights reserved.
+ * Copyright (c) 2024-2026, Arm Limited or its affiliates. All rights reserved.
  * SPDX-License-Identifier : Apache-2.0
 
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -18,8 +18,8 @@
 #include "platform_override_struct.h"
 #include "pal_common_support.h"
 
-extern PLATFORM_OVERRIDE_TIMER_INFO_TABLE platform_timer_cfg;
-extern WD_INFO_TABLE platform_wd_cfg;
+extern const PLATFORM_OVERRIDE_TIMER_INFO_TABLE platform_timer_cfg;
+extern const WD_INFO_TABLE platform_wd_cfg;
 
 
 /**

pal/baremetal/base/src/pal_tpm2.c

@@ -1,5 +1,5 @@
 /** @file
- * Copyright (c) 2025, Arm Limited or its affiliates. All rights reserved.
+ * Copyright (c) 2025-2026, Arm Limited or its affiliates. All rights reserved.
  * SPDX-License-Identifier : Apache-2.0
 
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -18,7 +18,7 @@
 #include "pal_common_support.h"
 #include "platform_override_struct.h"
 
-extern PLATFORM_OVERRIDE_TPM2_INFO_TABLE platform_tpm2_cfg;
+extern const PLATFORM_OVERRIDE_TPM2_INFO_TABLE platform_tpm2_cfg;
 
 /**
   @brief  Populate the TPM2 info table from platform configuration.

pal/baremetal/target/RDN2/src/pal_bsa.c

@@ -29,15 +29,15 @@
 #define CONDUIT_HVC       1
 #define CONDUIT_NONE     -2
 
-extern PLATFORM_OVERRIDE_GIC_INFO_TABLE     platform_gic_cfg;
-extern PLATFORM_OVERRIDE_TIMER_INFO_TABLE   platform_timer_cfg;
-extern PLATFORM_OVERRIDE_IOVIRT_INFO_TABLE  platform_iovirt_cfg;
-extern PLATFORM_OVERRIDE_NODE_DATA          platform_node_type;
-extern PLATFORM_OVERRIDE_UART_INFO_TABLE    platform_uart_cfg;
-extern PLATFORM_OVERRIDE_MEMORY_INFO_TABLE  platform_mem_cfg;
-extern PCIE_INFO_TABLE                      platform_pcie_cfg;
-extern WD_INFO_TABLE                        platform_wd_cfg;
-extern DMA_INFO_TABLE                       platform_dma_cfg;
+extern const PLATFORM_OVERRIDE_GIC_INFO_TABLE     platform_gic_cfg;
+extern const PLATFORM_OVERRIDE_TIMER_INFO_TABLE   platform_timer_cfg;
+extern const PLATFORM_OVERRIDE_IOVIRT_INFO_TABLE  platform_iovirt_cfg;
+extern const PLATFORM_OVERRIDE_NODE_DATA          platform_node_type;
+extern const PLATFORM_OVERRIDE_UART_INFO_TABLE    platform_uart_cfg;
+extern const PLATFORM_OVERRIDE_MEMORY_INFO_TABLE  platform_mem_cfg;
+extern const PCIE_INFO_TABLE                      platform_pcie_cfg;
+extern const WD_INFO_TABLE                        platform_wd_cfg;
+extern const DMA_INFO_TABLE                       platform_dma_cfg;
 
 extern addr_t __TEXT_START__, __TEXT_END__;
 #define TEXT_START    ((addr_t)&__TEXT_START__)

pal/baremetal/target/RDN2/src/pal_sbsa.c

@@ -23,14 +23,14 @@
 #include "pal_common_support.h"
 #include "pal_pcie_enum.h"
 
-extern PLATFORM_OVERRIDE_GIC_INFO_TABLE     platform_gic_cfg;
-extern PLATFORM_OVERRIDE_TIMER_INFO_TABLE   platform_timer_cfg;
-extern PLATFORM_OVERRIDE_IOVIRT_INFO_TABLE  platform_iovirt_cfg;
-extern PLATFORM_OVERRIDE_NODE_DATA          platform_node_type;
-extern PLATFORM_OVERRIDE_UART_INFO_TABLE    platform_uart_cfg;
-extern PLATFORM_OVERRIDE_MEMORY_INFO_TABLE  platform_mem_cfg;
-extern PCIE_INFO_TABLE                      platform_pcie_cfg;
-extern WD_INFO_TABLE                        platform_wd_cfg;
+extern const PLATFORM_OVERRIDE_GIC_INFO_TABLE     platform_gic_cfg;
+extern const PLATFORM_OVERRIDE_TIMER_INFO_TABLE   platform_timer_cfg;
+extern const PLATFORM_OVERRIDE_IOVIRT_INFO_TABLE  platform_iovirt_cfg;
+extern const PLATFORM_OVERRIDE_NODE_DATA          platform_node_type;
+extern const PLATFORM_OVERRIDE_UART_INFO_TABLE    platform_uart_cfg;
+extern const PLATFORM_OVERRIDE_MEMORY_INFO_TABLE  platform_mem_cfg;
+extern const PCIE_INFO_TABLE                      platform_pcie_cfg;
+extern const WD_INFO_TABLE                        platform_wd_cfg;
 
 /** SMMU API's **/
 /**
@@ -172,4 +172,3 @@ pal_ras_inject_error(RAS_ERR_IN_t in_param, RAS_ERR_OUT_t *out_param)
   pal_warn_not_implemented(__func__);
   return PAL_STATUS_NOT_IMPLEMENTED;
 }
-