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Tegra186: add Video memory carveout settings 

This patch supports the TEGRA_SIP_NEW_VIDEOMEM_REGION SiP call to
program new video memory carveout settings from the NS world.

Change-Id: If9ed818fe71e6cb7461f225090105a4d8883b7a2
Signed-off-by: Wayne Lin <wlin@nvidia.com>
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
This commit is contained in:
Varun Wadekar 2016-02-03 09:51:25 -08:00
parent 7afd463753
commit 7dd5af0a09
1 changed files with 27 additions and 0 deletions
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27
plat/nvidia/tegra/soc/t186/plat_sip_calls.c
View File

@ -36,6 +36,7 @@
#include <debug.h>
#include <errno.h>
#include <mce.h>
#include <memctrl.h>
#include <runtime_svc.h>
#include <t18x_ari.h>
#include <tegra_private.h>
@ -106,6 +107,32 @@ int plat_sip_handler(uint32_t smc_fid,
return 0;
case TEGRA_SIP_NEW_VIDEOMEM_REGION:
/* clean up the high bits */
x1 = (uint32_t)x1;
x2 = (uint32_t)x2;
/*
* Check if Video Memory overlaps TZDRAM (contains bl31/bl32)
* or falls outside of the valid DRAM range
*/
mce_ret = bl31_check_ns_address(x1, x2);
if (mce_ret)
return -ENOTSUP;
/*
* Check if Video Memory is aligned to 1MB.
*/
if ((x1 & 0xFFFFF) || (x2 & 0xFFFFF)) {
ERROR("Unaligned Video Memory base address!\n");
return -ENOTSUP;
}
/* new video memory carveout settings */
tegra_memctrl_videomem_setup(x1, x2);
return 0;
default:
ERROR("%s: unhandled SMC (0x%x)\n", __func__, smc_fid);
break;