Blackfin: fix early crash when booting on wrong cpu
Make sure we process the kernel command line before poking the hardware, so that we can process early printk. This helps ensure that if you boot a kernel configured for a different processor, something will be left in the log buffer. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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@ -477,9 +477,11 @@ static __init void parse_cmdline_early(char *cmdline_p)
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} else if (!memcmp(to, "clkin_hz=", 9)) {
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to += 9;
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early_init_clkin_hz(to);
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#ifdef CONFIG_EARLY_PRINTK
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} else if (!memcmp(to, "earlyprintk=", 12)) {
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to += 12;
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setup_early_printk(to);
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#endif
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} else if (!memcmp(to, "memmap=", 7)) {
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to += 7;
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parse_memmap(to);
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@ -798,6 +800,11 @@ void __init setup_arch(char **cmdline_p)
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{
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unsigned long sclk, cclk;
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/* Check to make sure we are running on the right processor */
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if (unlikely(CPUID != bfin_cpuid()))
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printk(KERN_ERR "ERROR: Not running on ADSP-%s: unknown CPUID 0x%04x Rev 0.%d\n",
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CPU, bfin_cpuid(), bfin_revid());
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#ifdef CONFIG_DUMMY_CONSOLE
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conswitchp = &dummy_con;
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#endif
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@ -812,14 +819,17 @@ void __init setup_arch(char **cmdline_p)
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memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
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boot_command_line[COMMAND_LINE_SIZE - 1] = '\0';
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/* setup memory defaults from the user config */
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physical_mem_end = 0;
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_ramend = get_mem_size() * 1024 * 1024;
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memset(&bfin_memmap, 0, sizeof(bfin_memmap));
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/* If the user does not specify things on the command line, use
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* what the bootloader set things up as
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*/
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physical_mem_end = 0;
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parse_cmdline_early(&command_line[0]);
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if (_ramend == 0)
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_ramend = get_mem_size() * 1024 * 1024;
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if (physical_mem_end == 0)
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physical_mem_end = _ramend;
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@ -910,10 +920,7 @@ void __init setup_arch(char **cmdline_p)
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else
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printk(KERN_INFO "Compiled for ADSP-%s Rev 0.%d\n", CPU, bfin_compiled_revid());
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if (unlikely(CPUID != bfin_cpuid()))
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printk(KERN_ERR "ERROR: Not running on ADSP-%s: unknown CPUID 0x%04x Rev 0.%d\n",
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CPU, bfin_cpuid(), bfin_revid());
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else {
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if (likely(CPUID == bfin_cpuid())) {
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if (bfin_revid() != bfin_compiled_revid()) {
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if (bfin_compiled_revid() == -1)
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printk(KERN_ERR "Warning: Compiled for Rev none, but running on Rev %d\n",
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