One of our mx51 based boards doesn't seem to like 2.6.35 kernel with 2014.07 u-boot. We've ported our boards for the new kernel and new u-boot, but we need the old kernel to also work with new u-boot.
So here's what happens...
U-Boot 2014.07-svn83200 (Sep 15 2015 - 15:57:02)
CPU: Freescale i.MX51 rev3.0 at 800 MHz I2C: ready DRAM: 512 MiB Last reset reason:POR, (1) Boot Device: MMC MMC: FSL_SDHC: 0 In: serial Out: serial Err: serial Hit any key to stop autoboot: 0
MMC read: dev # 0, block # 2048, count 6144 ... 6144 blocks read: OK ## Booting kernel from Legacy Image at 92000000 ... Image Name: Linux-2.6.35.3-1129-g691c08a+ Image Type: ARM Linux Kernel Image (uncompressed) Data Size: 2873388 Bytes = 2.7 MiB Load Address: 90008000 Entry Point: 90008000 Verifying Checksum ... OK Loading Kernel Image ... OK
Starting kernel ...
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Looks like new u-boot passes something wrong to the kernel or doesn't pass something we need.
Seems like the first half of the kernel output timing is wrong. I tried different bauds to no avail.
On a working board we see early on...
entering mx51_clocks_init turning off all clocks external_low_reference = 00008000 external_high_reference = 01588800 ckih2_reference = 01770000 oscillator_reference = 016e3600 entering clk_tree_init clk_tree_init for mx51 returned from clk_tree_init setting uart_main_clk to pll3_sw_clk MXC_CCM_CSCDR1 is 00c30458 MXC_Early serial console at MMIO 0x73fc0000 (options '115200') bootconsole [ttymxc1] enabled
And then later... console [ttymxc1] enabled, bootconsole disabled
Looks like the early console is not working. I'll have to debug this tomorrow, but if anyone has suggestions that would be great.
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