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armv8: layerscape: Make U-Boot EL2 safe

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When U-Boot boots from EL2, skip some lowlevel init code requiring
EL3, including CCI-400/CCN-504, trust zone, GIC, etc. These
initialization tasks are carried out before U-Boot runs. This applies
to the RAM version image used for SPL boot if PPA is loaded first.

Signed-off-by: York Sun <york.sun@nxp.com>
This commit is contained in:
York Sun
2017-05-15 08:51:59 -07:00
parent 1f55a93802
commit 399e2bb60c
7 changed files with 52 additions and 6 deletions
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5
board/freescale/common/ns_access.c
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@@ -39,7 +39,10 @@ static void enable_devices_ns_access(struct csu_ns_dev *ns_dev, uint32_t num)
void enable_layerscape_ns_access(void)
{
enable_devices_ns_access(ns_dev, ARRAY_SIZE(ns_dev));
#ifdef CONFIG_ARM64
if (current_el() == 3)
#endif
enable_devices_ns_access(ns_dev, ARRAY_SIZE(ns_dev));
}
void set_pcie_ns_access(int pcie, u16 val)