The QEMU emulation of m68k does not support RAMBAR accesses, add Kconfig option which inhibits those accesses, so that U-Boot can be started in m68k QEMU for CI testing purpopses until QEMU emulation improves.
Signed-off-by: Marek Vasut marek.vasut+renesas@mailbox.org --- Cc: Angelo Dureghello angelo@kernel-space.org Cc: Huan Wang alison.wang@nxp.com Cc: Marek Vasut marek.vasut+renesas@mailbox.org Cc: Simon Glass sjg@chromium.org Cc: Stefan Roese sr@denx.de Cc: Tom Rini trini@konsulko.com --- V2: No change --- arch/m68k/Kconfig | 11 ++++++++++- arch/m68k/cpu/mcf52x2/start.S | 4 ++-- 2 files changed, 12 insertions(+), 3 deletions(-)
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig index 32759cde47d..1911563e540 100644 --- a/arch/m68k/Kconfig +++ b/arch/m68k/Kconfig @@ -198,8 +198,17 @@ source "board/freescale/m5373evb/Kconfig" source "board/sysam/amcore/Kconfig" source "board/sysam/stmark2/Kconfig"
+config M68K_QEMU + bool "Build with workarounds for incomplete QEMU emulation" + default n + help + QEMU 8.x currently does not implement RAMBAR accesses and + DMA timers. Enable this option for U-Boot CI purposes only + to skip the RAMBAR accesses. + config MCFTMR bool "Use DMA timer" - default y + default y if !M68K_QEMU + default n if M68K_QEMU
endmenu diff --git a/arch/m68k/cpu/mcf52x2/start.S b/arch/m68k/cpu/mcf52x2/start.S index d48d0192eea..51d2e23df10 100644 --- a/arch/m68k/cpu/mcf52x2/start.S +++ b/arch/m68k/cpu/mcf52x2/start.S @@ -98,7 +98,7 @@ _start: nop move.w #0x2700,%sr
-#if defined(CONFIG_M5208) +#if defined(CONFIG_M5208) && !defined(CONFIG_M68K_QEMU) /* Initialize RAMBAR: locate SRAM and validate it */ move.l #(CFG_SYS_INIT_RAM_ADDR + CFG_SYS_INIT_RAM_CTRL), %d0 movec %d0, %RAMBAR1 @@ -120,7 +120,7 @@ _start: movec %d0, %RAMBAR0 #endif /* CONFIG_M5272 || CONFIG_M5249 || CONFIG_M5253 */
-#if defined(CONFIG_M5282) || defined(CONFIG_M5271) +#if (defined(CONFIG_M5282) || defined(CONFIG_M5271)) && !defined(CONFIG_M68K_QEMU) /* set MBAR address + valid flag */ move.l #(CFG_SYS_MBAR + 1), %d0 move.l %d0, 0x40000000