omap: add basic SPL support
- Provide alternate implementations of board_init_f()
board_init_r() for OMAP spl.
- Provide linker script
- Initialize global data
- Add serial console support
- Update CONFIG_SYS_TEXT_BASE to allow for SPL's bss and move
it to board config header from config.mk
Signed-off-by: Aneesh V <aneesh@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
diff --git a/arch/arm/cpu/armv7/omap4/clocks.c b/arch/arm/cpu/armv7/omap4/clocks.c
index e8d3a52..f1e233a 100644
--- a/arch/arm/cpu/armv7/omap4/clocks.c
+++ b/arch/arm/cpu/armv7/omap4/clocks.c
@@ -791,6 +791,39 @@
wait_for_lock(base);
}
+void setup_clocks_for_console(void)
+{
+ /* Do not add any spl_debug prints in this function */
+ clrsetbits_le32(&prcm->cm_l4per_clkstctrl, CD_CLKCTRL_CLKTRCTRL_MASK,
+ CD_CLKCTRL_CLKTRCTRL_SW_WKUP <<
+ CD_CLKCTRL_CLKTRCTRL_SHIFT);
+
+ /* Enable all UARTs - console will be on one of them */
+ clrsetbits_le32(&prcm->cm_l4per_uart1_clkctrl,
+ MODULE_CLKCTRL_MODULEMODE_MASK,
+ MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
+ MODULE_CLKCTRL_MODULEMODE_SHIFT);
+
+ clrsetbits_le32(&prcm->cm_l4per_uart2_clkctrl,
+ MODULE_CLKCTRL_MODULEMODE_MASK,
+ MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
+ MODULE_CLKCTRL_MODULEMODE_SHIFT);
+
+ clrsetbits_le32(&prcm->cm_l4per_uart3_clkctrl,
+ MODULE_CLKCTRL_MODULEMODE_MASK,
+ MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
+ MODULE_CLKCTRL_MODULEMODE_SHIFT);
+
+ clrsetbits_le32(&prcm->cm_l4per_uart3_clkctrl,
+ MODULE_CLKCTRL_MODULEMODE_MASK,
+ MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
+ MODULE_CLKCTRL_MODULEMODE_SHIFT);
+
+ clrsetbits_le32(&prcm->cm_l4per_clkstctrl, CD_CLKCTRL_CLKTRCTRL_MASK,
+ CD_CLKCTRL_CLKTRCTRL_HW_AUTO <<
+ CD_CLKCTRL_CLKTRCTRL_SHIFT);
+}
+
void prcm_init(void)
{
switch (omap4_hw_init_context()) {