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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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2e25406fb8
This fixes kernel.org bugzilla 13596, see http://bugzilla.kernel.org/show_bug.cgi?id=13596 Reported-by: dvice_null@yahoo.com Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
81 lines
1.7 KiB
C
81 lines
1.7 KiB
C
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/console.h>
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#include <asm/sibyte/board.h>
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#include <asm/fw/cfe/cfe_api.h>
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#include <asm/fw/cfe/cfe_error.h>
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extern int cfe_cons_handle;
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static void cfe_console_write(struct console *cons, const char *str,
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unsigned int count)
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{
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int i, last, written;
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for (i=0, last=0; i<count; i++) {
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if (!str[i])
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/* XXXKW can/should this ever happen? */
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return;
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if (str[i] == '\n') {
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do {
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written = cfe_write(cfe_cons_handle, &str[last], i-last);
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if (written < 0)
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;
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last += written;
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} while (last < i);
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while (cfe_write(cfe_cons_handle, "\r", 1) <= 0)
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;
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}
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}
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if (last != count) {
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do {
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written = cfe_write(cfe_cons_handle, &str[last], count-last);
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if (written < 0)
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;
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last += written;
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} while (last < count);
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}
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}
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static int cfe_console_setup(struct console *cons, char *str)
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{
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char consdev[32];
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/* XXXKW think about interaction with 'console=' cmdline arg */
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/* If none of the console options are configured, the build will break. */
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if (cfe_getenv("BOOT_CONSOLE", consdev, 32) >= 0) {
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#ifdef CONFIG_SERIAL_SB1250_DUART
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if (!strcmp(consdev, "uart0")) {
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setleds("u0cn");
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} else if (!strcmp(consdev, "uart1")) {
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setleds("u1cn");
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} else
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#endif
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#ifdef CONFIG_VGA_CONSOLE
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if (!strcmp(consdev, "pcconsole0")) {
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setleds("pccn");
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} else
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#endif
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return -ENODEV;
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}
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return 0;
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}
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static struct console sb1250_cfe_cons = {
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.name = "cfe",
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.write = cfe_console_write,
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.setup = cfe_console_setup,
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.flags = CON_PRINTBUFFER,
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.index = -1,
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};
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static int __init sb1250_cfe_console_init(void)
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{
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register_console(&sb1250_cfe_cons);
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return 0;
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}
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console_initcall(sb1250_cfe_console_init);
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