[U-Boot] [PATCH] powerpc/85xx: Rework MPC8536 SERDES is_serdes_configured support
Kumar Gala
galak at kernel.crashing.org
Mon May 24 16:41:25 CEST 2010
Move serdes init until after we are in ram so we can keep track of a
global static protocal map for the particular serdes config we are in.
This makes is_serdes_configured() much simplier and not constantly
reading registers to determine if a given device is enabled based on the
protocol.
Signed-off-by: Kumar Gala <galak at kernel.crashing.org>
---
arch/powerpc/cpu/mpc85xx/cpu_init.c | 12 ++---
arch/powerpc/cpu/mpc85xx/mpc8536_serdes.c | 66 ++++++++++++++--------------
arch/powerpc/include/asm/fsl_serdes.h | 1 +
include/configs/MPC8536DS.h | 1 +
4 files changed, 40 insertions(+), 40 deletions(-)
diff --git a/arch/powerpc/cpu/mpc85xx/cpu_init.c b/arch/powerpc/cpu/mpc85xx/cpu_init.c
index 99431dc..e957677 100644
--- a/arch/powerpc/cpu/mpc85xx/cpu_init.c
+++ b/arch/powerpc/cpu/mpc85xx/cpu_init.c
@@ -39,10 +39,6 @@
DECLARE_GLOBAL_DATA_PTR;
-#ifdef CONFIG_MPC8536
-extern void fsl_serdes_init(void);
-#endif
-
#ifdef CONFIG_QE
extern qe_iop_conf_t qe_iop_conf_tab[];
extern void qe_config_iopin(u8 port, u8 pin, int dir,
@@ -239,9 +235,6 @@ void cpu_init_f (void)
/* Config QE ioports */
config_qe_ioports();
#endif
-#if defined(CONFIG_MPC8536)
- fsl_serdes_init();
-#endif
#if defined(CONFIG_FSL_DMA)
dma_init();
#endif
@@ -386,6 +379,11 @@ int cpu_init_r(void)
qe_reset();
#endif
+#if defined(CONFIG_SYS_HAS_SERDES)
+ /* needs to be in ram since code uses global static vars */
+ fsl_serdes_init();
+#endif
+
#if defined(CONFIG_MP)
setup_mp();
#endif
diff --git a/arch/powerpc/cpu/mpc85xx/mpc8536_serdes.c b/arch/powerpc/cpu/mpc85xx/mpc8536_serdes.c
index 7e72f5f..6dadeb8 100644
--- a/arch/powerpc/cpu/mpc85xx/mpc8536_serdes.c
+++ b/arch/powerpc/cpu/mpc85xx/mpc8536_serdes.c
@@ -66,10 +66,11 @@
#define FSL_SRDSCR3_LANEE_SGMII 0x00000000
#define FSL_SRDSCR3_LANEE_SATA 0x00150005
-
#define SRDS1_MAX_LANES 8
#define SRDS2_MAX_LANES 2
+static u32 serdes1_prtcl_map, serdes2_prtcl_map;
+
static u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = {
[0x2] = {PCIE1, PCIE1, PCIE1, PCIE1, NONE, NONE, NONE, NONE},
[0x3] = {PCIE1, PCIE1, PCIE1, PCIE1, PCIE1, PCIE1, PCIE1, PCIE1},
@@ -86,39 +87,12 @@ static u8 serdes2_cfg_tbl[][SRDS2_MAX_LANES] = {
int is_serdes_configured(enum srds_prtcl device)
{
- int i;
- ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
- u32 pordevsr = in_be32(&gur->pordevsr);
- u32 srds1_cfg = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >>
- MPC85xx_PORDEVSR_IO_SEL_SHIFT;
+ int ret = (1 << device) & serdes1_prtcl_map;
- u32 srds2_cfg = (pordevsr & MPC85xx_PORDEVSR_SRDS2_IO_SEL) >>
- GUTS_PORDEVSR_SERDES2_IO_SEL_SHIFT;
-
- debug("%s: dev = %d\n", __FUNCTION__, device);
- debug("PORDEVSR[IO_SEL] = %x\n", srds1_cfg);
- debug("PORDEVSR[SRDS2_IO_SEL] = %x\n", srds2_cfg);
-
- if (srds1_cfg > ARRAY_SIZE(serdes1_cfg_tbl)) {
- printf("Invalid PORDEVSR[IO_SEL] = %d\n", srds1_cfg);
- return 0;
- }
-
- if (srds2_cfg > ARRAY_SIZE(serdes2_cfg_tbl)) {
- printf("Invalid PORDEVSR[SRDS2_IO_SEL] = %d\n", srds2_cfg);
- return 0;
- }
-
- for (i = 0; i < SRDS1_MAX_LANES; i++) {
- if (serdes1_cfg_tbl[srds1_cfg][i] == device)
- return 1;
- }
- for (i = 0; i < SRDS2_MAX_LANES; i++) {
- if (serdes2_cfg_tbl[srds2_cfg][i] == device)
- return 1;
- }
+ if (ret)
+ return ret;
- return 0;
+ return (1 << device) & serdes2_prtcl_map;
}
void fsl_serdes_init(void)
@@ -126,13 +100,20 @@ void fsl_serdes_init(void)
void *guts = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
void *sd = (void *)CONFIG_SYS_MPC85xx_SERDES2_ADDR;
u32 pordevsr = in_be32(guts + GUTS_PORDEVSR_OFFS);
- u32 srds2_io_sel;
+ u32 srds1_io_sel, srds2_io_sel;
u32 tmp;
+ int lane;
+
+ srds1_io_sel = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >>
+ MPC85xx_PORDEVSR_IO_SEL_SHIFT;
/* parse the SRDS2_IO_SEL of PORDEVSR */
srds2_io_sel = (pordevsr & GUTS_PORDEVSR_SERDES2_IO_SEL)
>> GUTS_PORDEVSR_SERDES2_IO_SEL_SHIFT;
+ debug("PORDEVSR[SRDS1_IO_SEL] = %x\n", srds1_io_sel);
+ debug("PORDEVSR[SRDS2_IO_SEL] = %x\n", srds2_io_sel);
+
switch (srds2_io_sel) {
case 1: /* Lane A - SATA1, Lane E - SATA2 */
/* CR 0 */
@@ -246,4 +227,23 @@ void fsl_serdes_init(void)
default:
break;
}
+
+ if (srds1_io_sel > ARRAY_SIZE(serdes1_cfg_tbl)) {
+ printf("Invalid PORDEVSR[SRDS1_IO_SEL] = %d\n", srds1_io_sel);
+ return;
+ }
+ for (lane = 0; lane < SRDS1_MAX_LANES; lane++) {
+ enum srds_prtcl lane_prtcl = serdes1_cfg_tbl[srds1_io_sel][lane];
+ serdes1_prtcl_map |= (1 << lane_prtcl);
+ }
+
+ if (srds2_io_sel > ARRAY_SIZE(serdes2_cfg_tbl)) {
+ printf("Invalid PORDEVSR[SRDS2_IO_SEL] = %d\n", srds2_io_sel);
+ return;
+ }
+
+ for (lane = 0; lane < SRDS2_MAX_LANES; lane++) {
+ enum srds_prtcl lane_prtcl = serdes2_cfg_tbl[srds2_io_sel][lane];
+ serdes2_prtcl_map |= (1 << lane_prtcl);
+ }
}
diff --git a/arch/powerpc/include/asm/fsl_serdes.h b/arch/powerpc/include/asm/fsl_serdes.h
index d4839f4..c7877b9 100644
--- a/arch/powerpc/include/asm/fsl_serdes.h
+++ b/arch/powerpc/include/asm/fsl_serdes.h
@@ -44,5 +44,6 @@ enum srds_prtcl {
};
int is_serdes_configured(enum srds_prtcl device);
+void fsl_serdes_init(void);
#endif /* __FSL_SERDES_H */
diff --git a/include/configs/MPC8536DS.h b/include/configs/MPC8536DS.h
index da4313a..ab33c6c 100644
--- a/include/configs/MPC8536DS.h
+++ b/include/configs/MPC8536DS.h
@@ -63,6 +63,7 @@
#define CONFIG_FSL_PCI_INIT 1 /* Use common FSL init code */
#define CONFIG_FSL_PCIE_RESET 1 /* need PCIe reset errata */
#define CONFIG_SYS_PCI_64BIT 1 /* enable 64-bit PCI resources */
+#define CONFIG_SYS_HAS_SERDES 1 /* has SERDES */
#define CONFIG_FSL_LAW 1 /* Use common FSL init code */
#define CONFIG_E1000 1 /* Defind e1000 pci Ethernet card*/
--
1.6.0.6
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