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tools: kwboot: Replace ARM mov + movt instruction pair by mov + orr

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Older Armada SoCs have custom ARMv5te compatible core which does not
support movt instruction. So replace mov + movt instruction pair used for
immediate move construction by mov + orr instructions which are supported
also by ARMv5te.

After this change kwboot ARM code should be compatible with any 32-bit ARM
core compatible by ARMv2 or new. At least GNU AS does not throw any error
or warning.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Pali Rohár
2021-10-27 20:57:01 +02:00
committed by Stefan Roese
parent 56452295c3
commit 558176dcb1
1 changed files with 2 additions and 2 deletions
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4
tools/kwboot.c
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@@ -126,8 +126,8 @@ static unsigned char kwboot_baud_code[] = {
0xfe, 0x5f, 0x2d, 0xe9, /* push { r1 - r12, lr } */
/* ; r0 = UART_BASE */
0x02, 0x0a, 0xa0, 0xe3, /* mov r0, #0x2000 */
0x01, 0x00, 0x4d, 0xe3, /* movt r0, #0xd001 */
0x0d, 0x02, 0xa0, 0xe3, /* mov r0, #0xd0000000 */
0x12, 0x0a, 0x80, 0xe3, /* orr r0, r0, #0x12000 */
/* ; r2 = address of preamble string */
0xcc, 0x20, 0x8f, 0xe2, /* adr r2, preamble */