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@@ -0,0 +1,36 @@
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+/* SPDX-License-Identifier: GPL-2.0+ */
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+/*
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+ * Copyright 2019 NXP
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+ */
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+
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+#include <config.h>
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+
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+.align 8
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+.global boot_pointer
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+boot_pointer:
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+ .space 32
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+
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+/*
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+ * Routine: save_boot_params (called after reset from start.S)
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+ */
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+
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+.global save_boot_params
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+save_boot_params:
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+ /* The firmware provided ATAG/FDT address can be found in r2/x0 */
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+ adr x0, boot_pointer
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+ stp x1, x2, [x0], #16
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+ stp x3, x4, [x0], #16
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+
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+ /*
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+ * We use absolute address not PC relative address for return.
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+ * When running SPL on iMX8, the A core starts at address 0,
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+ * an alias to OCRAM 0x100000, our linker address for SPL is
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+ * from 0x100000. So using absolute address can jump to the OCRAM
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+ * address from the alias. The alias only map first 96KB of OCRAM,
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+ * so this require the SPL size can't beyond 96KB.
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+ * But when using SPL DM, the size increase significantly and
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+ * always beyonds 96KB. That's why we have to jump to OCRAM.
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+ * Normal u-boot also runs into this codes, but there is no impact.
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+ */
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+ ldr x1, =save_boot_params_ret
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+ br x1
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