diff options
| author | Nils Fitinghoff <nils.fitinghoff@kiteshield.com> | 2024-10-16 13:04:23 +0200 |
|---|---|---|
| committer | Nils Fitinghoff <nils.fitinghoff@kiteshield.com> | 2024-10-17 17:40:20 +0200 |
| commit | 9138706b8a5e4469f33a7a826c08e6446b642a3c (patch) | |
| tree | 1a530c8d1f96cf2193666f9ae595f8f399366899 /src/target.rs | |
| parent | cb3af5ba736443adbf3dbf305f7a95aa23f3d26b (diff) | |
Support RT1180 family
The 1180 family uses a different boot header than previous families. The
header is generated to support the default configuration where hash and
signature errors are ignored.
The XIP `__pre_init` strategy is still used, more for ease of getting
something running than because of any known problems with the boot ROM's
implementation of loading images to different memories.
The boot ROM for the 1180 does not appear to allow the entry point to
lie outside the (loaded or execute-in-place) image, so a new `.xip`
section is added after the vector table to put the address inside the
image while keeping VMA=LMA. This could cause problems for tools that
manipulate binaries based on section names.
Diffstat (limited to 'src/target.rs')
| -rw-r--r-- | src/target.rs | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/target.rs b/src/target.rs index 3a61584..765862d 100644 --- a/src/target.rs +++ b/src/target.rs @@ -41,6 +41,9 @@ global_asm! {r#" __pre_init: ldr r0, =__imxrt_family @ Need to know which chip family we're initializing. + ldr r1, =1180 + cmp r0, r1 @ Is this an 1180? + beq flexram_1180 ldr r1, =1170 cmp r0, r1 @ Is this an 1170? @@ -66,7 +69,14 @@ __pre_init: ldr r1, [r0, #64] @ r1 = *(IMXRT_IOMUXC_GPR + 16) orr r1, r1, #1<<2 @ r1 |= 1 << 2 str r1, [r0, #64] @ *(IMXRT_IOMUXC_GPR + 16) = r1 + b copy_from_flash + flexram_1180: + ldr r0, =0x444F0060 @ M33_CONFIG + ldr r1, =__flexram_config + str r1, [r0, #0] + + copy_from_flash: # Conditionally copy text. ldr r0, =__stext ldr r2, =__sitext |