-----Original Message----- From: Scott Wood [mailto:oss@buserror.net] Sent: Tuesday, January 12, 2016 1:47 AM To: Qianyu Gong qianyu.gong@nxp.com; u-boot@lists.denx.de Cc: B07421@freescale.com; B48286@freescale.com; Wenbin.Song@freescale.com; Mingkai Hu mingkai.hu@nxp.com Subject: Re: [U-Boot] [Patch V3 3/3] armv8/ls1043aqds: add QSPI boot support
On Mon, 2016-01-11 at 10:17 +0800, Gong Qianyu wrote:
diff --git a/board/freescale/ls1043aqds/ls1043aqds.c b/board/freescale/ls1043aqds/ls1043aqds.c index d6696ca..770b79f 100644 --- a/board/freescale/ls1043aqds/ls1043aqds.c +++ b/board/freescale/ls1043aqds/ls1043aqds.c @@ -43,15 +43,19 @@ enum {
int checkboard(void) { +#ifndef CONFIG_QSPI_BOOT char buf[64]; #ifndef CONFIG_SD_BOOT u8 sw; #endif +#endif
puts("Board: LS1043AQDS, boot from ");
#ifdef CONFIG_SD_BOOT puts("SD\n"); +#elif defined(CONFIG_QSPI_BOOT)
- puts("QSPI\n");
#else sw = QIXIS_READ(brdcfg[0]); sw = (sw & QIXIS_LBMAP_MASK) >> QIXIS_LBMAP_SHIFT; @@ -68,12
+72,15
@@ int checkboard(void) printf("invalid setting of SW%u\n", QIXIS_LBMAP_SWITCH);
#endif
+#ifndef CONFIG_QSPI_BOOT
/* For QSPI boot, here I2C is not ready yet. */ printf("Sys ID: 0x%02x, Sys Ver: 0x%02x\n", QIXIS_READ(id), QIXIS_READ(arch));
printf("FPGA: v%d (%s), build %d\n", (int)QIXIS_READ(scver), qixis_read_tag(buf), (int)qixis_read_minor());
+#endif
Why isn't i2c ready? How is DDR inited without it?
-Scott
Hi Scott,
The calling sequence in U-Boot is : checkboard() -> init_func_i2c() -> dram_init()
So I2C is not ready in checkboard() but is ready for DDR initialization.
Regards, Qianyu