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| author | Vikram Kanigiri <vikram.kanigiri@arm.com> | 2015-10-20 16:55:26 +0100 |
|---|---|---|
| committer | Vikram Kanigiri <vikram.kanigiri@arm.com> | 2015-11-27 13:47:13 +0000 |
| commit | 609ebce42596174e987c84854ae0cfca402f7a02 (patch) | |
| tree | e538c512c9d2c65eff5990116b952ad157b4089a /include/drivers/arm/tzc400.h | |
| parent | 4a1dcde72fa43b2ffdc5d54a1932e727374d11c2 (diff) | |
| download | platform_external_arm-trusted-firmware-609ebce42596174e987c84854ae0cfca402f7a02.tar.gz platform_external_arm-trusted-firmware-609ebce42596174e987c84854ae0cfca402f7a02.tar.bz2 platform_external_arm-trusted-firmware-609ebce42596174e987c84854ae0cfca402f7a02.zip | |
Fix TZC-400 peripheral detection
The TZC-400 driver implementation incorrectly uses the component
ID registers to detect the TZC-400 peripheral. As all ARM
peripherals share the same component ID, it doesn't allow to
uniquely identify the TZC-400 peripheral. This patch fixes the
TZC-400 driver by relying on the `part_number_0` and
`part_number_1` fields in the `PID` registers instead.
The `tzc_read_component_id` function has been replaced by
`tzc_read_peripheral_id`, which reads the 'part_number' values
and compares them with the TZC-400 peripheral ID.
Also, it adds a debug assertion to detect when the TZC driver
initialisation function is called multiple times.
Change-Id: I35949f6501a51c0a794144cd1c3a6db62440dce6
Diffstat (limited to 'include/drivers/arm/tzc400.h')
| -rw-r--r-- | include/drivers/arm/tzc400.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/drivers/arm/tzc400.h b/include/drivers/arm/tzc400.h index a5312c47e..f8e1664ef 100644 --- a/include/drivers/arm/tzc400.h +++ b/include/drivers/arm/tzc400.h @@ -147,7 +147,9 @@ #define TZC_REGION_ACCESS_RDWR(id) \ (TZC_REGION_ACCESS_RD(id) | TZC_REGION_ACCESS_WR(id)) -#define TZC400_COMPONENT_ID 0xb105f00d +/* Consist of part_number_1 and part_number_0 */ +#define TZC400_PERIPHERAL_ID 0x0460 + #ifndef __ASSEMBLY__ |