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kern: enforce maximum secure region size
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1 changed files with 7 additions and 0 deletions
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@ -23,6 +23,8 @@ namespace ams::kern::board::nintendo::nx {
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constexpr size_t SecureAlignment = 128_KB;
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constexpr size_t SecureSizeMax = util::AlignDown(512_MB - 1, SecureAlignment);
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/* Global variables for panic. */
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constinit bool g_call_smc_on_panic;
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@ -191,6 +193,11 @@ namespace ams::kern::board::nintendo::nx {
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}
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bool SetSecureRegion(KPhysicalAddress phys_addr, size_t size) {
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/* Ensure size is valid. */
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if (size > SecureSizeMax) {
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return false;
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}
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/* Ensure address and size are aligned. */
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if (!util::IsAligned(GetInteger(phys_addr), SecureAlignment)) {
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return false;
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