135 lines
2.8 KiB
C
135 lines
2.8 KiB
C
/*
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* (C) Copyright 2010, 2011
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* NVIDIA Corporation <www.nvidia.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _WARM_BOOT_H_
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#define _WARM_BOOT_H_
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#define STRAP_OPT_A_RAM_CODE_SHIFT 4
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#define STRAP_OPT_A_RAM_CODE_MASK (0xf << STRAP_OPT_A_RAM_CODE_SHIFT)
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/* Defines the supported operating modes */
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enum fuse_operating_mode {
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MODE_PRODUCTION = 3,
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MODE_UNDEFINED,
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};
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/* Defines the CMAC-AES-128 hash length in 32 bit words. (128 bits = 4 words) */
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enum {
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HASH_LENGTH = 4
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};
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/* Defines the storage for a hash value (128 bits) */
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struct hash {
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u32 hash[HASH_LENGTH];
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};
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/*
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* Defines the code header information for the boot rom.
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*
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* The code immediately follows the code header.
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*
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* Note that the code header needs to be 16 bytes aligned to preserve
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* the alignment of relevant data for hash and decryption computations without
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* requiring extra copies to temporary memory areas.
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*/
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struct wb_header {
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u32 length_insecure; /* length of the code header */
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u32 reserved[3];
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struct hash hash; /* hash of header+code, starts next field*/
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struct hash random_aes_block; /* a data block to aid security. */
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u32 length_secure; /* length of the code header */
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u32 destination; /* destination address to put the wb code */
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u32 entry_point; /* execution address of the wb code */
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u32 code_length; /* length of the code */
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};
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/*
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* The warm boot code needs direct access to these registers since it runs in
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* SRAM and cannot call other U-Boot code.
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*/
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union osc_ctrl_reg {
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struct {
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u32 xoe:1;
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u32 xobp:1;
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u32 reserved0:2;
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u32 xofs:6;
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u32 reserved1:2;
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u32 xods:5;
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u32 reserved2:3;
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u32 oscfi_spare:8;
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u32 pll_ref_div:2;
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u32 osc_freq:2;
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};
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u32 word;
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};
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union pllx_base_reg {
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struct {
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u32 divm:5;
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u32 reserved0:3;
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u32 divn:10;
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u32 reserved1:2;
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u32 divp:3;
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u32 reserved2:4;
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u32 lock:1;
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u32 reserved3:1;
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u32 ref_dis:1;
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u32 enable:1;
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u32 bypass:1;
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};
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u32 word;
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};
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union pllx_misc_reg {
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struct {
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u32 vcocon:4;
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u32 lfcon:4;
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u32 cpcon:4;
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u32 lock_sel:6;
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u32 reserved0:1;
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u32 lock_enable:1;
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u32 reserved1:1;
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u32 dccon:1;
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u32 pts:2;
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u32 reserved2:6;
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u32 out1_div_byp:1;
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u32 out1_inv_clk:1;
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};
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u32 word;
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};
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/*
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* TODO: This register is not documented in the TRM yet. We could move this
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* into the EMC and give it a proper interface, but not while it is
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* undocumented.
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*/
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union scratch3_reg {
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struct {
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u32 pllx_base_divm:5;
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u32 pllx_base_divn:10;
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u32 pllx_base_divp:3;
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u32 pllx_misc_lfcon:4;
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u32 pllx_misc_cpcon:4;
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};
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u32 word;
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};
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/**
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* Save warmboot memory settings for a later resume
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*
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* @return 0 if ok, -1 on error
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*/
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int warmboot_save_sdram_params(void);
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int warmboot_prepare_code(u32 seg_address, u32 seg_length);
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int sign_data_block(u8 *source, u32 length, u8 *signature);
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void wb_start(void); /* Start of WB assembly code */
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void wb_end(void); /* End of WB assembly code */
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#endif
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