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exynos5250: Hacked up lowlevel_init_c 

This is the first lowlevel init routine that gets called in romstage.
It's fugly and needs a lot of clean-up, but does the job for now.

Change-Id: Id54bf4f1c3753bcbed5f6b5eeb4b48bc3b41ce93
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/2133
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This commit is contained in:
David Hendricks 2013-01-10 15:05:22 -08:00 committed by Ronald G. Minnich
parent b9fb213f85
commit eb5e252ce1
1 changed files with 17 additions and 10 deletions
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27
src/cpu/samsung/exynos5250/lowlevel_init_c.c
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@ -36,6 +36,7 @@
#include <cpu/samsung/exynos5250/tzpc.h> #include <cpu/samsung/exynos5250/tzpc.h>
#include "setup.h" #include "setup.h"
#include <console/console.h>
void do_barriers(void); /* FIXME: make gcc shut up about "no previous prototype" */ void do_barriers(void); /* FIXME: make gcc shut up about "no previous prototype" */
@ -70,14 +71,15 @@ enum {
int lowlevel_init_subsystems(void) int lowlevel_init_subsystems(void)
{ {
uint32_t reset_status; // uint32_t reset_status;
int actions = 0; int actions = 0;
do_barriers(); // do_barriers();
/* Setup cpu info which is needed to select correct register offsets */ /* Setup cpu info which is needed to select correct register offsets */
cpu_info_init(); cpu_info_init();
#if 0
reset_status = power_read_reset_status(); reset_status = power_read_reset_status();
switch (reset_status) { switch (reset_status) {
@ -91,24 +93,28 @@ int lowlevel_init_subsystems(void)
/* This is a normal boot (not a wake from sleep) */ /* This is a normal boot (not a wake from sleep) */
actions = DO_UART | DO_CLOCKS | DO_POWER; actions = DO_UART | DO_CLOCKS | DO_POWER;
} }
#endif
actions = DO_UART | DO_CLOCKS | DO_POWER;
if (actions & DO_POWER) if (actions & DO_POWER)
power_init(); power_init();
if (actions & DO_CLOCKS) if (actions & DO_CLOCKS)
system_clock_init(); system_clock_init();
if (actions & DO_UART) { if (actions & DO_UART) {
/* Set up serial UART so we can printf() */ /* Set up serial UART so we can printf() */
// exynos_pinmux_config(EXYNOS_UART, PINMUX_FLAG_NONE);
/* FIXME(dhendrix): add a function for mapping /* FIXME(dhendrix): add a function for mapping
CONFIG_CONSOLE_SERIAL_UART_ADDRESS to PERIPH_ID_UARTn */ CONFIG_CONSOLE_SERIAL_UART_ADDRESS to PERIPH_ID_UARTn */
// exynos_pinmux_config(EXYNOS_UART, PINMUX_FLAG_NONE);
exynos_pinmux_config(PERIPH_ID_UART3, PINMUX_FLAG_NONE); exynos_pinmux_config(PERIPH_ID_UART3, PINMUX_FLAG_NONE);
/* FIXME(dhendrix): serial_init() does not seem to
actually do anything !?!? */
// serial_init();
init_timer(); /* FIXME(dhendrix): was timer_init() */
}
/* FIXME(dhendrix): place this somewhere for ramstage... */ console_init();
while (1) {
console_tx_byte('C');
}
}
init_timer(); /* FIXME(dhendrix): was timer_init() */
#if 0 #if 0
if (actions & DO_CLOCKS) { if (actions & DO_CLOCKS) {
mem_ctrl_init(); mem_ctrl_init();
@ -116,5 +122,6 @@ int lowlevel_init_subsystems(void)
} }
#endif #endif
return actions & DO_WAKEUP; // return actions & DO_WAKEUP;
return 0;
} }