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nios2: pass command line and initrd to linux in bootm.c
This patch adds bootargs passing to nios2 linux. The args passing is enabled with, r4 : 'NIOS' magic r5 : pointer to initrd start r6 : pointer to initrd end r7 : pointer to command line Signed-off-by: Thomas Chou <thomas@wytron.com.tw> Signed-off-by: Scott McNutt <smcnutt@psyent.com>
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1 changed files with 12 additions and 7 deletions
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@ -26,21 +26,26 @@
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#include <asm/byteorder.h>
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#include <asm/cache.h>
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#define NIOS_MAGIC 0x534f494e /* enable command line and initrd passing */
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int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
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{
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void (*kernel)(void) = (void (*)(void))images->ep;
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void (*kernel)(int, int, int, char *) = (void *)images->ep;
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char *commandline = getenv("bootargs");
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ulong initrd_start = images->rd_start;
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ulong initrd_end = images->rd_end;
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if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
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return 1;
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/* flushes data and instruction caches before calling the kernel */
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flush_dcache (0,CONFIG_SYS_DCACHE_SIZE);
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flush_icache (0,CONFIG_SYS_ICACHE_SIZE);
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disable_interrupts();
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flush_dcache((ulong)kernel, CONFIG_SYS_DCACHE_SIZE);
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flush_icache((ulong)kernel, CONFIG_SYS_ICACHE_SIZE);
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/* For now we assume the Microtronix linux ... which only
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* needs to be called ;-)
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*/
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kernel ();
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debug("bootargs=%s @ 0x%lx\n", commandline, (ulong)&commandline);
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debug("initrd=0x%lx-0x%lx\n", (ulong)initrd_start, (ulong)initrd_end);
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kernel(NIOS_MAGIC, initrd_start, initrd_end, commandline);
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/* does not return */
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return 1;
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