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hos: add NX BIT/BC structures and utilize them

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These are used to communicate between bootloader stages and pass config.
The NX Boot Config is now passed as is from PKG2 partition.
This commit is contained in:
CTCaer
2025-08-08 15:49:47 +03:00
parent 216f579527
commit 3a9689b46e
3 changed files with 128 additions and 70 deletions
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50
bootloader/hos/pkg1.h
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@@ -110,6 +110,56 @@ typedef struct _pk11_hdr_t
/* 0x1C */ u32 sm_off;
} pk11_hdr_t;
/*
* NX BIT - Secure monitor mailbox
*
* On older versions the Tegra BIT was remaining intact.
* The bootloader info from BCT was copied in the mailbox at 0x40002E10.
* On >= 4.0.0 the boot reason was replaced by BCT boot type.
* On newer versions (>= 7.0.0) the Tegra BIT is replaced with NX BIT.
* That also includes secmon state mailbox and pkg1 and pkg11 headers.
*/
#define NX_BIT1_MAILBOX_ADDR 0x40002E00
#define NX_BIT7_MAILBOX_ADDR 0x40000000
enum
{
SECMON_STATE_NOT_READY = 0,
PKG1_STATE_NOT_READY = 0,
PKG1_STATE_NXBC_COPIED = 1,
PKG1_STATE_DRAM_READY = 2,
PKG1_STATE_PKG2_READY_OLD = 3,
PKG1_STATE_PKG2_READY = 4
};
#define NX_BIT_BL_ATTR_SAFE_MODE BIT(0)
#define NX_BIT_BL_ATTR_SMC_BLACKLIST_STANDARD BIT(1) // Accounted only on >= 8.0.0.
#define NX_BIT_BL_ATTR_SMC_BLACKLIST_DEVICEUD BIT(2) // Accounted only on >= 8.0.0.
#define NX_BIT_BL_ATTR_SMC_BLACKLIST_SAFEMODE BIT(3) // Accounted only on >= 8.0.0.
typedef struct _nx_bit_t
{
/* 0x00 */ u32 secldr_tmr_start;
/* 0x04 */ u32 secldr_tmr_end;
/* 0x08 */ u32 secmon_tmr_start;
/* 0x0C */ u32 secmon_tmr_end;
/* 0x10 */ u32 bl_version;
/* 0x14 */ u32 bl_start_block;
/* 0x18 */ u32 bl_start_page;
/* 0x1C */ u32 bl_attribute; // bit0: Safe, bit1-4: SMC blacklist mask.
/* 0x20 */ u32 boot_type; // 0: None, 1: Coldboot, 2: RMC, 3: UART, 4: Exit RCM.
/* 0x24 */ u8 padding_nxbit[12];
/* 0x30 */ pk1_hdr_t pk1_hdr; // (>= 7.0.0).
/* 0x50 */ pk11_hdr_t pk11_hdr; // (>= 7.0.0).
/* 0x70 */ u8 padding_pkg1[0x88];
/* 0xF8 */ vu32 secldr_state;
/* 0xFC */ vu32 secmon_state;
u8 padding_mail[0x100];
} nx_bit_t;
const pkg1_id_t *pkg1_get_latest();
const pkg1_id_t *pkg1_identify(u8 *pkg1);
int pkg1_decrypt(const pkg1_id_t *id, u8 *pkg1);