diff options
Diffstat (limited to 'board/renesas/porter/porter_spl.c')
| -rw-r--r-- | board/renesas/porter/porter_spl.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/board/renesas/porter/porter_spl.c b/board/renesas/porter/porter_spl.c index 533b0b41e9..f711aa9c35 100644 --- a/board/renesas/porter/porter_spl.c +++ b/board/renesas/porter/porter_spl.c @@ -463,6 +463,27 @@ void spl_board_init(void) void board_boot_order(u32 *spl_boot_list) { +#ifdef CONFIG_TPL_BUILD + const u32 jtag_magic = 0x1337c0de; + const u32 load_magic = 0xb33fc0de; + + /* + * If JTAG probe sets special word at 0xe6300020, then it must + * put U-Boot into RAM and TPL will start it from RAM. + */ + if (readl(CONFIG_TPL_TEXT_BASE + 0x20) == jtag_magic) { + printf("JTAG boot detected!\n"); + + while (readl(CONFIG_TPL_TEXT_BASE + 0x24) != load_magic) + ; + + spl_boot_list[0] = BOOT_DEVICE_RAM; + spl_boot_list[1] = BOOT_DEVICE_NONE; + + return; + } +#endif + /* Boot from SPI NOR with YMODEM UART fallback. */ spl_boot_list[0] = BOOT_DEVICE_SPI; spl_boot_list[1] = BOOT_DEVICE_UART; |