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spd: trusty: pass boot params to the Trusted OS 

This patch passes the boot parameters, provided by the previous
bootloader, to the Trusted OS via X0, X1 and X2.

Original change by: Wayne Lin <wlin@nvidia.com>

Change-Id: I2039612a8a8226158babfd505ce8c31c4212319c
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
This commit is contained in:
Wayne Lin 2016-05-24 15:28:42 -07:00 committed by Varun Wadekar
parent 64c07d0f00
commit feb5aa24d2
1 changed files with 11 additions and 0 deletions
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11
services/spd/trusty/trusty.c
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@ -45,6 +45,9 @@
/* macro to check if Hypervisor is enabled in the HCR_EL2 register */
#define HYP_ENABLE_FLAG 0x286001
/* length of Trusty's input parameters (in bytes) */
#define TRUSTY_PARAMS_LEN_BYTES (4096*2)
struct trusty_stack {
uint8_t space[PLATFORM_STACK_SIZE] __aligned(16);
};
@ -414,6 +417,14 @@ static int32_t trusty_setup(void)
DAIF_IRQ_BIT |
DAIF_ABT_BIT);
/*
* arg0 = TZDRAM aperture available for BL32
* arg1 = BL32 boot params
* arg2 = BL32 boot params length
*/
ep_info->args.arg1 = ep_info->args.arg2;
ep_info->args.arg2 = TRUSTY_PARAMS_LEN_BYTES;
bl31_register_bl32_init(trusty_init);
psci_register_spd_pm_hook(&trusty_pm);