Alexandru Gagniuc (mr.nuke.me@gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/4686
-gerrit
commit 29fe00a9915d1f8bf49a3cc1df38831b8d101cc9 Author: Alexandru Gagniuc mr.nuke.me@gmail.com Date: Fri Jan 3 01:27:23 2014 -0500
cubieboard: Setup CPU clock in romstage and load ramstage
This completes the romstage for the cubieboard.
Change-Id: If3272d8a9e414f782892bc41b34b5e2dece5d7e1 Signed-off-by: Alexandru Gagniuc mr.nuke.me@gmail.com --- src/mainboard/cubietech/cubieboard/romstage.c | 28 ++++++++++++++++++++++++--- 1 file changed, 25 insertions(+), 3 deletions(-)
diff --git a/src/mainboard/cubietech/cubieboard/romstage.c b/src/mainboard/cubietech/cubieboard/romstage.c index 1b4d886..199842b 100644 --- a/src/mainboard/cubietech/cubieboard/romstage.c +++ b/src/mainboard/cubietech/cubieboard/romstage.c @@ -1,10 +1,17 @@ /* - * Placeholder for Cubieboard romstage + * Basic romstage for Cubieboard + * + * Set up system voltages, then increase the CPU clock, before turning control + * to ramstage. The CPU VDD needs to be properly set before it can run at full + * speed. Setting the CPU at full speed helps lzma-decompress ramstage a lot + * faster. * * Copyright (C) 2013 Alexandru Gagniuc mr.nuke.me@gmail.com * Subject to the GNU GPL v2, or (at your option) any later version. */
+#include <arch/stages.h> +#include <cbfs.h> #include <console/console.h> #include <cpu/allwinner/a10/clock.h> #include <cpu/allwinner/a10/gpio.h> @@ -63,10 +70,25 @@ static enum cb_err cubieboard_setup_power(void)
void main(void) { + void *entry; + enum cb_err err; + console_init(); - printk(BIOS_INFO, "You have managed to succesfully load romstage.\n");
/* Configure power rails */ - cubieboard_setup_power(); + err = cubieboard_setup_power(); + + if (err == CB_SUCCESS) { + /* TODO: Get this clock from devicetree.cb */ + a1x_set_cpu_clock(1008); + } else { + /* cubieboard_setup_power() prints more details */ + printk(BIOS_WARNING, "Will run CPU at reduced speed\n"); + a1x_set_cpu_clock(384); + } + + entry = cbfs_load_stage(CBFS_DEFAULT_MEDIA, "fallback/coreboot_ram"); + printk(BIOS_INFO, "entry is 0x%p, leaving romstage.\n", entry);
+ stage_exit(entry); }