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-rw-r--r--src/northbridge/intel/sandybridge/raminit_common.h3
-rw-r--r--src/northbridge/intel/sandybridge/raminit_ivy.c341
-rw-r--r--src/northbridge/intel/sandybridge/raminit_sandy.c6
3 files changed, 255 insertions, 95 deletions
diff --git a/src/northbridge/intel/sandybridge/raminit_common.h b/src/northbridge/intel/sandybridge/raminit_common.h
index 7aec7354b1..ab6e592f07 100644
--- a/src/northbridge/intel/sandybridge/raminit_common.h
+++ b/src/northbridge/intel/sandybridge/raminit_common.h
@@ -78,6 +78,9 @@ typedef struct ramctr_timing_st {
int mobile;
int sandybridge;
+ /* DDR base_freq = 100 Mhz / 133 Mhz */
+ u8 base_freq;
+
u16 cas_supported;
/* tLatencies are in units of ns, scaled by x256 */
u32 tCK;
diff --git a/src/northbridge/intel/sandybridge/raminit_ivy.c b/src/northbridge/intel/sandybridge/raminit_ivy.c
index f13d61375a..cee7eddfb8 100644
--- a/src/northbridge/intel/sandybridge/raminit_ivy.c
+++ b/src/northbridge/intel/sandybridge/raminit_ivy.c
@@ -23,117 +23,266 @@
#include "raminit_common.h"
/* Frequency multiplier. */
-static u32 get_FRQ(u32 tCK)
+static u32 get_FRQ(u32 tCK, u8 base_freq)
{
u32 FRQ;
- FRQ = 256000 / (tCK * BASEFREQ);
- if (FRQ > 8)
- return 8;
- if (FRQ < 3)
- return 3;
+
+ FRQ = 256000 / (tCK * base_freq);
+
+ if (base_freq == 100) {
+ if (FRQ > 12)
+ return 12;
+ if (FRQ < 7)
+ return 7;
+ } else {
+ if (FRQ > 10)
+ return 10;
+ if (FRQ < 3)
+ return 3;
+ }
+
return FRQ;
}
-static u32 get_REFI(u32 tCK)
+static u32 get_REFI(u32 tCK, u8 base_freq)
{
- /* Get REFI based on MCU frequency using the following rule:
- * _________________________________________
- * FRQ : | 3 | 4 | 5 | 6 | 7 | 8 |
- * REFI: | 3120 | 4160 | 5200 | 6240 | 7280 | 8320 |
- */
- static const u32 frq_refi_map[] =
- { 3120, 4160, 5200, 6240, 7280, 8320 };
- return frq_refi_map[get_FRQ(tCK) - 3];
+ u32 refi;
+
+ if (base_freq == 100) {
+ /* Get REFI based on MCU frequency using the following rule:
+ * tREFI = 7.8usec
+ * _________________________________________
+ * FRQ : | 7 | 8 | 9 | 10 | 11 | 12 |
+ * REFI : | 5460 | 6240 | 7020 | 7800 | 8580 | 9360 |
+ */
+ static const u32 frq_xs_map[] =
+ { 5460, 6240, 7020, 7800, 8580, 9360 };
+ refi = frq_xs_map[get_FRQ(tCK, 100) - 7];
+ } else {
+ /* Get REFI based on MCU frequency using the following rule:
+ * tREFI = 7.8usec
+ * ________________________________________________________
+ * FRQ : | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
+ * REFI: | 3120 | 4160 | 5200 | 6240 | 7280 | 8320 | 9360 | 10400 |
+ */
+ static const u32 frq_refi_map[] =
+ { 3120, 4160, 5200, 6240, 7280, 8320, 9360, 10400 };
+ refi = frq_refi_map[get_FRQ(tCK, 133) - 3];
+ }
+
+ return refi;
}
-static u8 get_XSOffset(u32 tCK)
+static u8 get_XSOffset(u32 tCK, u8 base_freq)
{
- /* Get XSOffset based on MCU frequency using the following rule:
- * _________________________
- * FRQ : | 3 | 4 | 5 | 6 | 7 | 8 |
- * XSOffset : | 4 | 6 | 7 | 8 | 10 | 11 |
- */
- static const u8 frq_xs_map[] = { 4, 6, 7, 8, 10, 11 };
- return frq_xs_map[get_FRQ(tCK) - 3];
+ u8 xsoffset;
+
+ if (base_freq == 100) {
+ /* Get XSOffset based on MCU frequency using the following rule:
+ * tXS-offset: tXS = tRFC+10ns.
+ * _____________________________
+ * FRQ : | 7 | 8 | 9 | 10 | 11 | 12 |
+ * XSOffset : | 7 | 8 | 9 | 10 | 11 | 12 |
+ */
+ static const u8 frq_xs_map[] = { 7, 8, 9, 10, 11, 12 };
+ xsoffset = frq_xs_map[get_FRQ(tCK, 100) - 7];
+ } else {
+ /* Get XSOffset based on MCU frequency using the following rule:
+ * ___________________________________
+ * FRQ : | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
+ * XSOffset : | 4 | 6 | 7 | 8 | 10 | 11 | 12 | 14 |
+ */
+ static const u8 frq_xs_map[] = { 4, 6, 7, 8, 10, 11, 12, 14 };
+ xsoffset = frq_xs_map[get_FRQ(tCK, 133) - 3];
+ }
+
+ return xsoffset;
}
-static u8 get_MOD(u32 tCK)
+static u8 get_MOD(u32 tCK, u8 base_freq)
{
- /* Get MOD based on MCU frequency using the following rule:
- * _____________________________
- * FRQ : | 3 | 4 | 5 | 6 | 7 | 8 |
- * MOD : | 12 | 12 | 12 | 12 | 15 | 16 |
- */
- static const u8 frq_mod_map[] = { 12, 12, 12, 12, 15, 16 };
- return frq_mod_map[get_FRQ(tCK) - 3];
+ u8 mod;
+
+ if (base_freq == 100) {
+ /* Get MOD based on MCU frequency using the following rule:
+ * _____________________________
+ * FRQ : | 7 | 8 | 9 | 10 | 11 | 12 |
+ * MOD : | 12 | 12 | 14 | 15 | 17 | 18 |
+ */
+
+ static const u8 frq_mod_map[] = { 12, 12, 14, 15, 17, 18 };
+ mod = frq_mod_map[get_FRQ(tCK, 100) - 7];
+ } else {
+ /* Get MOD based on MCU frequency using the following rule:
+ * _______________________________________
+ * FRQ : | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
+ * MOD : | 12 | 12 | 12 | 12 | 15 | 16 | 18 | 20 |
+ */
+
+ static const u8 frq_mod_map[] = { 12, 12, 12, 12, 15, 16, 18, 20 };
+ mod = frq_mod_map[get_FRQ(tCK, 133) - 3];
+ }
+ return mod;
}
-static u8 get_WLO(u32 tCK)
+static u8 get_WLO(u32 tCK, u8 base_freq)
{
- /* Get WLO based on MCU frequency using the following rule:
- * _______________________
- * FRQ : | 3 | 4 | 5 | 6 | 7 | 8 |
- * WLO : | 4 | 5 | 6 | 6 | 8 | 8 |
- */
- static const u8 frq_wlo_map[] = { 4, 5, 6, 6, 8, 8 };
- return frq_wlo_map[get_FRQ(tCK) - 3];
+ u8 wlo;
+
+ if (base_freq == 100) {
+ /* Get WLO based on MCU frequency using the following rule:
+ * Write leveling output delay
+ * _____________________________
+ * FRQ : | 7 | 8 | 9 | 10 | 11 | 12 |
+ * MOD : | 6 | 6 | 7 | 8 | 9 | 9 |
+ */
+
+ static const u8 frq_wlo_map[] = { 6, 6, 7, 8, 9, 9 };
+ wlo = frq_wlo_map[get_FRQ(tCK, 100) - 7];
+ } else {
+ /* Get WLO based on MCU frequency using the following rule:
+ * Write leveling output delay
+ * ________________________________
+ * FRQ : | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
+ * WLO : | 4 | 5 | 6 | 6 | 8 | 8 | 9 | 10 |
+ */
+ static const u8 frq_wlo_map[] = { 4, 5, 6, 6, 8, 8, 9, 10 };
+ wlo = frq_wlo_map[get_FRQ(tCK, 133) - 3];
+ }
+
+ return wlo;
}
-static u8 get_CKE(u32 tCK)
+static u8 get_CKE(u32 tCK, u8 base_freq)
{
- /* Get CKE based on MCU frequency using the following rule:
- * _______________________
- * FRQ : | 3 | 4 | 5 | 6 | 7 | 8 |
- * CKE : | 3 | 3 | 4 | 4 | 5 | 6 |
- */
- static const u8 frq_cke_map[] = { 3, 3, 4, 4, 5, 6 };
- return frq_cke_map[get_FRQ(tCK) - 3];
+ u8 cke;
+
+ if (base_freq == 100) {
+ /* Get CKE based on MCU frequency using the following rule:
+ * _____________________________
+ * FRQ : | 7 | 8 | 9 | 10 | 11 | 12 |
+ * MOD : | 4 | 4 | 5 | 5 | 6 | 6 |
+ */
+
+ static const u8 frq_cke_map[] = { 4, 4, 5, 5, 6, 6 };
+ cke = frq_cke_map[get_FRQ(tCK, 100) - 7];
+ } else {
+ /* Get CKE based on MCU frequency using the following rule:
+ * ________________________________
+ * FRQ : | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
+ * WLO : | 3 | 3 | 4 | 4 | 5 | 6 | 6 | 7 |
+ */
+ static const u8 frq_cke_map[] = { 3, 3, 4, 4, 5, 6, 6, 7 };
+ cke = frq_cke_map[get_FRQ(tCK, 133) - 3];
+ }
+
+ return cke;
}
-static u8 get_XPDLL(u32 tCK)
+static u8 get_XPDLL(u32 tCK, u8 base_freq)
{
- /* Get XPDLL based on MCU frequency using the following rule:
- * _____________________________
- * FRQ : | 3 | 4 | 5 | 6 | 7 | 8 |
- * XPDLL : | 10 | 13 | 16 | 20 | 23 | 26 |
- */
- static const u8 frq_xpdll_map[] = { 10, 13, 16, 20, 23, 26 };
- return frq_xpdll_map[get_FRQ(tCK) - 3];
+ u8 xpdll;
+
+ if (base_freq == 100) {
+ /* Get XPDLL based on MCU frequency using the following rule:
+ * _____________________________
+ * FRQ : | 7 | 8 | 9 | 10 | 11 | 12 |
+ * XPDLL : | 17 | 20 | 22 | 24 | 27 | 32 |
+ */
+
+ static const u8 frq_xpdll_map[] = { 17, 20, 22, 24, 27, 32 };
+ xpdll = frq_xpdll_map[get_FRQ(tCK, 100) - 7];
+ } else {
+ /* Get XPDLL based on MCU frequency using the following rule:
+ * _______________________________________
+ * FRQ : | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
+ * XPDLL : | 10 | 13 | 16 | 20 | 23 | 26 | 29 | 32 |
+ */
+ static const u8 frq_xpdll_map[] = { 10, 13, 16, 20, 23, 26, 29, 32 };
+ xpdll = frq_xpdll_map[get_FRQ(tCK, 133) - 3];
+ }
+
+ return xpdll;
}
-static u8 get_XP(u32 tCK)
+static u8 get_XP(u32 tCK, u8 base_freq)
{
- /* Get XP based on MCU frequency using the following rule:
- * _______________________
- * FRQ : | 3 | 4 | 5 | 6 | 7 | 8 |
- * XP : | 3 | 4 | 4 | 5 | 6 | 7 |
- */
- static const u8 frq_xp_map[] = { 3, 4, 4, 5, 6, 7 };
- return frq_xp_map[get_FRQ(tCK) - 3];
+ u8 xp;
+
+ if (base_freq == 100) {
+ /* Get XP based on MCU frequency using the following rule:
+ * _____________________________
+ * FRQ : | 7 | 8 | 9 | 10 | 11 | 12 |
+ * XP : | 5 | 5 | 6 | 6 | 7 | 8 |
+ */
+
+ static const u8 frq_xp_map[] = { 5, 5, 6, 6, 7, 8 };
+ xp = frq_xp_map[get_FRQ(tCK, 100) - 7];
+ } else {
+ /* Get XP based on MCU frequency using the following rule:
+ * _______________________________________
+ * FRQ : | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
+ * XP : | 3 | 4 | 4 | 5 | 6 | 7 | 8 | 8 |
+ */
+ static const u8 frq_xp_map[] = { 3, 4, 4, 5, 6, 7 , 8, 8 };
+ xp = frq_xp_map[get_FRQ(tCK, 133) - 3];
+ }
+
+ return xp;
}
-static u8 get_AONPD(u32 tCK)
+static u8 get_AONPD(u32 tCK, u8 base_freq)
{
- /* Get AONPD based on MCU frequency using the following rule:
- * ________________________
- * FRQ : | 3 | 4 | 5 | 6 | 7 | 8 |
- * AONPD : | 4 | 5 | 6 | 8 | 8 | 10 |
- */
- static const u8 frq_aonpd_map[] = { 4, 5, 6, 8, 8, 10 };
- return frq_aonpd_map[get_FRQ(tCK) - 3];
+ u8 aonpd;
+
+ if (base_freq == 100) {
+ /* Get AONPD based on MCU frequency using the following rule:
+ * _____________________________
+ * FRQ : | 7 | 8 | 9 | 10 | 11 | 12 |
+ * AONPD : | 6 | 8 | 8 | 9 | 10 | 11 |
+ */
+
+ static const u8 frq_aonpd_map[] = { 6, 8, 8, 9, 10, 11 };
+ aonpd = frq_aonpd_map[get_FRQ(tCK, 100) - 7];
+ } else {
+ /* Get AONPD based on MCU frequency using the following rule:
+ * _______________________________________
+ * FRQ : | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
+ * AONPD : | 4 | 5 | 6 | 8 | 8 | 10 | 11 | 12 |
+ */
+ static const u8 frq_aonpd_map[] = { 4, 5, 6, 8, 8, 10, 11, 12 };
+ aonpd = frq_aonpd_map[get_FRQ(tCK, 133) - 3];
+ }
+
+ return aonpd;
}
-static u32 get_COMP2(u32 tCK)
+static u32 get_COMP2(u32 tCK, u8 base_freq)
{
- /* Get COMP2 based on MCU frequency using the following rule:
- * ___________________________________________________________
- * FRQ : | 3 | 4 | 5 | 6 | 7 | 8 |
- * COMP : | D6BEDCC | CE7C34C | CA57A4C | C6369CC | C42514C | C21410C |
- */
- static const u32 frq_comp2_map[] = { 0xD6BEDCC, 0xCE7C34C, 0xCA57A4C,
- 0xC6369CC, 0xC42514C, 0xC21410C
- };
- return frq_comp2_map[get_FRQ(tCK) - 3];
+ u32 comp2;
+
+ if (base_freq == 100) {
+ /* Get COMP2 based on MCU frequency using the following rule:
+ * ______________________________________________________________
+ * FRQ : | 7 | 8 | 9 | 10 | 11 | 12 |
+ * COMP : | CA8C264 | C6671E4 | C6671E4 | C446964 | C235924 | C235924 |
+ */
+
+ static const u32 frq_comp2_map[] = { 0xCA8C264, 0xC6671E4, 0xC6671E4, 0xC446964, 0xC235924, 0xC235924 };
+ comp2 = frq_comp2_map[get_FRQ(tCK, 100) - 7];
+ } else {
+ /* Get COMP2 based on MCU frequency using the following rule:
+ * ________________________________________________________________________________
+ * FRQ : | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
+ * COMP : | D6FF5E4 | CEBDB64 | CA8C264 | C6671E4 | C446964 | C235924 | C235924 | C235924 |
+ */
+ static const u32 frq_comp2_map[] = { 0xD6FF5E4, 0xCEBDB64, 0xCA8C264,
+ 0xC6671E4, 0xC446964, 0xC235924, 0xC235924, 0xC235924
+ };
+ comp2 = frq_comp2_map[get_FRQ(tCK, 133) - 3];
+ }
+
+ return comp2;
}
static void dram_timing(ramctr_timing * ctrl)
@@ -268,22 +417,27 @@ static void dram_timing(ramctr_timing * ctrl)
ctrl->tRFC = DIV_ROUND_UP(ctrl->tRFC, ctrl->tCK);
printk(BIOS_DEBUG, "Selected tRFC : %uT\n", ctrl->tRFC);
- ctrl->tREFI = get_REFI(ctrl->tCK);
- ctrl->tMOD = get_MOD(ctrl->tCK);
- ctrl->tXSOffset = get_XSOffset(ctrl->tCK);
- ctrl->tWLO = get_WLO(ctrl->tCK);
- ctrl->tCKE = get_CKE(ctrl->tCK);
- ctrl->tXPDLL = get_XPDLL(ctrl->tCK);
- ctrl->tXP = get_XP(ctrl->tCK);
- ctrl->tAONPD = get_AONPD(ctrl->tCK);
+ ctrl->tREFI = get_REFI(ctrl->tCK, ctrl->base_freq);
+ ctrl->tMOD = get_MOD(ctrl->tCK, ctrl->base_freq);
+ ctrl->tXSOffset = get_XSOffset(ctrl->tCK, ctrl->base_freq);
+ ctrl->tWLO = get_WLO(ctrl->tCK, ctrl->base_freq);
+ ctrl->tCKE = get_CKE(ctrl->tCK, ctrl->base_freq);
+ ctrl->tXPDLL = get_XPDLL(ctrl->tCK, ctrl->base_freq);
+ ctrl->tXP = get_XP(ctrl->tCK, ctrl->base_freq);
+ ctrl->tAONPD = get_AONPD(ctrl->tCK, ctrl->base_freq);
}
static void dram_freq(ramctr_timing * ctrl)
{
if (ctrl->tCK > TCK_400MHZ) {
- printk (BIOS_ERR, "DRAM frequency is under lowest supported frequency (400 MHz). Increasing to 400 MHz as last resort");
+ printk (BIOS_ERR, "DRAM frequency is under lowest supported "
+ "frequency (400 MHz). Increasing to 400 MHz as last resort");
ctrl->tCK = TCK_400MHZ;
}
+
+ /* TODO: implement 100Mhz refclock */
+ ctrl->base_freq = 133;
+
while (1) {
u8 val2;
u32 reg1 = 0;
@@ -307,7 +461,7 @@ static void dram_freq(ramctr_timing * ctrl)
}
/* Frequency multiplier. */
- u32 FRQ = get_FRQ(ctrl->tCK);
+ u32 FRQ = get_FRQ(ctrl->tCK, ctrl->base_freq);
/* The PLL will never lock if the required frequency is
* already set. Exit early to prevent a system hang.
@@ -373,7 +527,7 @@ static void dram_ioregs(ramctr_timing * ctrl)
printram("done\n");
// Set comp2
- comp2 = get_COMP2(ctrl->tCK);
+ comp2 = get_COMP2(ctrl->tCK, ctrl->base_freq);
MCHBAR32(0x3714) = comp2;
printram("COMP2 done\n");
@@ -398,7 +552,8 @@ int try_init_dram_ddr3_ivy(ramctr_timing *ctrl, int fast_boot,
{
int err;
- printk(BIOS_DEBUG, "Starting RAM training (%d).\n", fast_boot);
+ printk(BIOS_DEBUG, "Starting Ivybridge RAM training (%d).\n",
+ fast_boot);
if (!fast_boot) {
/* Find fastest common supported parameters */
diff --git a/src/northbridge/intel/sandybridge/raminit_sandy.c b/src/northbridge/intel/sandybridge/raminit_sandy.c
index 84c237467f..084c6ec38a 100644
--- a/src/northbridge/intel/sandybridge/raminit_sandy.c
+++ b/src/northbridge/intel/sandybridge/raminit_sandy.c
@@ -281,7 +281,8 @@ static void dram_timing(ramctr_timing * ctrl)
static void dram_freq(ramctr_timing * ctrl)
{
if (ctrl->tCK > TCK_400MHZ) {
- printk (BIOS_ERR, "DRAM frequency is under lowest supported frequency (400 MHz). Increasing to 400 MHz as last resort");
+ printk (BIOS_ERR, "DRAM frequency is under lowest supported "
+ "frequency (400 MHz). Increasing to 400 MHz as last resort");
ctrl->tCK = TCK_400MHZ;
}
while (1) {
@@ -398,7 +399,8 @@ int try_init_dram_ddr3_sandy(ramctr_timing *ctrl, int fast_boot,
{
int err;
- printk(BIOS_DEBUG, "Starting RAM training (%d).\n", fast_boot);
+ printk(BIOS_DEBUG, "Starting SandyBridge RAM training (%d).\n",
+ fast_boot);
if (!fast_boot) {
/* Find fastest common supported parameters */
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-29 17:35:57 +0000