Tegra: memctrl_v1: disable AHB redirection after cold boot
During boot, USB3 and flash media (SDMMC/SATA) devices need access to IRAM. Because these clients connect to the MC and do not have a direct path to the IRAM, the MC implements AHB redirection during boot to allow path to IRAM. In this mode, accesses to a programmed memory address aperture are directed to the AHB bus, allowing access to the IRAM. The AHB aperture is defined by the IRAM_BASE_LO and IRAM_BASE_HI registers, which are initialized to disable this aperture. Once bootup is complete, we must program IRAM base/top, thus disabling access to IRAM. This patch provides functionality to disable this access. The tegra port calls this new function before jumping to the non-secure world during cold boot. Signed-off-by: Varun Wadekar <vwadekar@nvidia.com> |
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plat/nvidia/tegra/common/drivers/memctrl/memctrl_v1.c |
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plat/nvidia/tegra/common/drivers/memctrl/memctrl_v2.c |
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plat/nvidia/tegra/common/tegra_bl31_setup.c |
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plat/nvidia/tegra/include/drivers/memctrl.h |
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plat/nvidia/tegra/include/drivers/memctrl_v1.h |
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