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Merge pull request #858 from soby-mathew/sm/gic_driver_data_fix

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Flush the GIC driver data after init
This commit is contained in:
davidcunado-arm
2017-03-17 13:31:05 +00:00
committed by GitHub
parent 510a9de79f 311b177364
commit effe0dcab1
2 changed files with 25 additions and 2 deletions
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13
drivers/arm/gic/v2/gicv2_main.c
View File

@@ -1,5 +1,5 @@
/*
* Copyright (c) 2015-2016, ARM Limited and Contributors. All rights reserved.
* Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
@@ -158,6 +158,17 @@ void gicv2_driver_init(const gicv2_driver_data_t *plat_driver_data)
driver_data = plat_driver_data;
/*
* The GIC driver data is initialized by the primary CPU with caches
* enabled. When the secondary CPU boots up, it initializes the
* GICC/GICR interface with the caches disabled. Hence flush the
* driver_data to ensure coherency. This is not required if the
* platform has HW_ASSISTED_COHERENCY enabled.
*/
#if !HW_ASSISTED_COHERENCY
flush_dcache_range((uintptr_t) &driver_data, sizeof(driver_data));
flush_dcache_range((uintptr_t) driver_data, sizeof(*driver_data));
#endif
INFO("ARM GICv2 driver initialized\n");
}

14
drivers/arm/gic/v3/gicv3_main.c
View File

@@ -1,5 +1,5 @@
/*
* Copyright (c) 2015-2016, ARM Limited and Contributors. All rights reserved.
* Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
@@ -116,6 +116,18 @@ void gicv3_driver_init(const gicv3_driver_data_t *plat_driver_data)
driver_data = plat_driver_data;
/*
* The GIC driver data is initialized by the primary CPU with caches
* enabled. When the secondary CPU boots up, it initializes the
* GICC/GICR interface with the caches disabled. Hence flush the
* driver_data to ensure coherency. This is not required if the
* platform has HW_ASSISTED_COHERENCY enabled.
*/
#if !HW_ASSISTED_COHERENCY
flush_dcache_range((uintptr_t) &driver_data, sizeof(driver_data));
flush_dcache_range((uintptr_t) driver_data, sizeof(*driver_data));
#endif
INFO("GICv3 %s legacy support detected."
" ARM GICV3 driver initialized in EL3\n",
gicv2_compat ? "with" : "without");