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-rw-r--r--arch/x86/lib/spl.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/arch/x86/lib/spl.c b/arch/x86/lib/spl.c
index 7623fc9ada..1677f80b25 100644
--- a/arch/x86/lib/spl.c
+++ b/arch/x86/lib/spl.c
@@ -5,11 +5,15 @@
#include <common.h>
#include <debug_uart.h>
+#include <dm.h>
#include <malloc.h>
#include <spl.h>
+#include <syscon.h>
#include <asm/cpu.h>
+#include <asm/cpu_common.h>
#include <asm/mrccache.h>
#include <asm/mtrr.h>
+#include <asm/pci.h>
#include <asm/processor.h>
#include <asm/spl.h>
#include <asm-generic/sections.h>
@@ -21,6 +25,32 @@ __weak int arch_cpu_init_dm(void)
return 0;
}
+#ifdef CONFIG_TPL
+
+static int set_max_freq(void)
+{
+ if (cpu_get_burst_mode_state() == BURST_MODE_UNAVAILABLE) {
+ /*
+ * Burst Mode has been factory-configured as disabled and is not
+ * available in this physical processor package
+ */
+ debug("Burst Mode is factory-disabled\n");
+ return -ENOENT;
+ }
+
+ /* Enable burst mode */
+ cpu_set_burst_mode(true);
+
+ /* Enable speed step */
+ cpu_set_eist(true);
+
+ /* Set P-State ratio */
+ cpu_set_p_state_to_turbo_ratio();
+
+ return 0;
+}
+#endif
+
static int x86_spl_init(void)
{
#ifndef CONFIG_TPL
@@ -31,10 +61,16 @@ static int x86_spl_init(void)
* place it immediately below CONFIG_SYS_TEXT_BASE.
*/
char *ptr = (char *)0x110000;
+#else
+ struct udevice *punit;
#endif
int ret;
debug("%s starting\n", __func__);
+ if (IS_ENABLED(TPL))
+ ret = x86_cpu_reinit_f();
+ else
+ ret = x86_cpu_init_f();
ret = spl_init();
if (ret) {
debug("%s: spl_init() failed\n", __func__);
@@ -101,6 +137,14 @@ static int x86_spl_init(void)
return ret;
}
mtrr_commit(true);
+#else
+ ret = syscon_get_by_driver_data(X86_SYSCON_PUNIT, &punit);
+ if (ret)
+ debug("Could not find PUNIT (err=%d)\n", ret);
+
+ ret = set_max_freq();
+ if (ret)
+ debug("Failed to set CPU frequency (err=%d)\n", ret);
#endif
return 0;