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-rw-r--r--arch/powerpc/cpu/mpc8xxx/ddr/options.c78
1 files changed, 59 insertions, 19 deletions
diff --git a/arch/powerpc/cpu/mpc8xxx/ddr/options.c b/arch/powerpc/cpu/mpc8xxx/ddr/options.c
index c641e85..0e7097b 100644
--- a/arch/powerpc/cpu/mpc8xxx/ddr/options.c
+++ b/arch/powerpc/cpu/mpc8xxx/ddr/options.c
@@ -13,6 +13,14 @@
#include "ddr.h"
+/*
+ * Use our own stack based buffer before relocation to allow accessing longer
+ * hwconfig strings that might be in the environment before we've relocated.
+ * This is pretty fragile on both the use of stack and if the buffer is big
+ * enough. However we will get a warning from getenv_f for the later.
+ */
+#define HWCONFIG_BUFFER_SIZE 128
+
/* Board-specific functions defined in each board's ddr.c */
extern void fsl_ddr_board_options(memctl_options_t *popts,
dimm_params_t *pdimm,
@@ -24,6 +32,15 @@ unsigned int populate_memctl_options(int all_DIMMs_registered,
unsigned int ctrl_num)
{
unsigned int i;
+ char buffer[HWCONFIG_BUFFER_SIZE];
+ char *buf = NULL;
+
+ /*
+ * Extract hwconfig from environment since we have not properly setup
+ * the environment but need it for ddr config params
+ */
+ if (getenv_f("hwconfig", buffer, sizeof(buffer)) > 0)
+ buf = buffer;
/* Chip select options. */
@@ -221,7 +238,7 @@ unsigned int populate_memctl_options(int all_DIMMs_registered,
* should be a subset of the requested configuration.
*/
#if (CONFIG_NUM_DDR_CONTROLLERS > 1)
- if (hwconfig_sub("fsl_ddr", "ctlr_intlv")) {
+ if (hwconfig_sub_f("fsl_ddr", "ctlr_intlv", buf)) {
if (pdimm[0].n_ranks == 0) {
printf("There is no rank on CS0 for controller %d. Because only"
" rank on CS0 and ranks chip-select interleaved with CS0"
@@ -234,19 +251,25 @@ unsigned int populate_memctl_options(int all_DIMMs_registered,
* test null first. if CONFIG_HWCONFIG is not defined
* hwconfig_arg_cmp returns non-zero
*/
- if (hwconfig_subarg_cmp("fsl_ddr", "ctlr_intlv", "null")) {
+ if (hwconfig_subarg_cmp_f("fsl_ddr", "ctlr_intlv",
+ "null", buf)) {
popts->memctl_interleaving = 0;
debug("memory controller interleaving disabled.\n");
- } else if (hwconfig_subarg_cmp("fsl_ddr", "ctlr_intlv", "cacheline"))
+ } else if (hwconfig_subarg_cmp_f("fsl_ddr",
+ "ctlr_intlv",
+ "cacheline", buf))
popts->memctl_interleaving_mode =
FSL_DDR_CACHE_LINE_INTERLEAVING;
- else if (hwconfig_subarg_cmp("fsl_ddr", "ctlr_intlv", "page"))
+ else if (hwconfig_subarg_cmp_f("fsl_ddr", "ctlr_intlv",
+ "page", buf))
popts->memctl_interleaving_mode =
FSL_DDR_PAGE_INTERLEAVING;
- else if (hwconfig_subarg_cmp("fsl_ddr", "ctlr_intlv", "bank"))
+ else if (hwconfig_subarg_cmp_f("fsl_ddr", "ctlr_intlv",
+ "bank", buf))
popts->memctl_interleaving_mode =
FSL_DDR_BANK_INTERLEAVING;
- else if (hwconfig_subarg_cmp("fsl_ddr", "ctlr_intlv", "superbank"))
+ else if (hwconfig_subarg_cmp_f("fsl_ddr", "ctlr_intlv",
+ "superbank", buf))
popts->memctl_interleaving_mode =
FSL_DDR_SUPERBANK_INTERLEAVING;
else {
@@ -256,19 +279,24 @@ unsigned int populate_memctl_options(int all_DIMMs_registered,
}
}
#endif
- if ((hwconfig_sub("fsl_ddr", "bank_intlv")) &&
+ if ((hwconfig_sub_f("fsl_ddr", "bank_intlv", buf)) &&
(CONFIG_CHIP_SELECTS_PER_CTRL > 1)) {
/* test null first. if CONFIG_HWCONFIG is not defined,
- * hwconfig_arg_cmp returns non-zero */
- if (hwconfig_subarg_cmp("fsl_ddr", "bank_intlv", "null"))
+ * hwconfig_subarg_cmp_f returns non-zero */
+ if (hwconfig_subarg_cmp_f("fsl_ddr", "bank_intlv",
+ "null", buf))
debug("bank interleaving disabled.\n");
- else if (hwconfig_subarg_cmp("fsl_ddr", "bank_intlv", "cs0_cs1"))
+ else if (hwconfig_subarg_cmp_f("fsl_ddr", "bank_intlv",
+ "cs0_cs1", buf))
popts->ba_intlv_ctl = FSL_DDR_CS0_CS1;
- else if (hwconfig_subarg_cmp("fsl_ddr", "bank_intlv", "cs2_cs3"))
+ else if (hwconfig_subarg_cmp_f("fsl_ddr", "bank_intlv",
+ "cs2_cs3", buf))
popts->ba_intlv_ctl = FSL_DDR_CS2_CS3;
- else if (hwconfig_subarg_cmp("fsl_ddr", "bank_intlv", "cs0_cs1_and_cs2_cs3"))
+ else if (hwconfig_subarg_cmp_f("fsl_ddr", "bank_intlv",
+ "cs0_cs1_and_cs2_cs3", buf))
popts->ba_intlv_ctl = FSL_DDR_CS0_CS1_AND_CS2_CS3;
- else if (hwconfig_subarg_cmp("fsl_ddr", "bank_intlv", "cs0_cs1_cs2_cs3"))
+ else if (hwconfig_subarg_cmp_f("fsl_ddr", "bank_intlv",
+ "cs0_cs1_cs2_cs3", buf))
popts->ba_intlv_ctl = FSL_DDR_CS0_CS1_CS2_CS3;
else
printf("hwconfig has unrecognized parameter for bank_intlv.\n");
@@ -342,10 +370,11 @@ unsigned int populate_memctl_options(int all_DIMMs_registered,
}
}
- if (hwconfig_sub("fsl_ddr", "addr_hash")) {
- if (hwconfig_subarg_cmp("fsl_ddr", "addr_hash", "null"))
+ if (hwconfig_sub_f("fsl_ddr", "addr_hash", buf)) {
+ if (hwconfig_subarg_cmp_f("fsl_ddr", "addr_hash", "null", buf))
popts->addr_hash = 0;
- else if (hwconfig_subarg_cmp("fsl_ddr", "addr_hash", "true"))
+ else if (hwconfig_subarg_cmp_f("fsl_ddr", "addr_hash",
+ "true", buf))
popts->addr_hash = 1;
}
@@ -393,11 +422,22 @@ int fsl_use_spd(void)
int use_spd = 0;
#ifdef CONFIG_DDR_SPD
+ char buffer[HWCONFIG_BUFFER_SIZE];
+ char *buf = NULL;
+
+ /*
+ * Extract hwconfig from environment since we have not properly setup
+ * the environment but need it for ddr config params
+ */
+ if (getenv_f("hwconfig", buffer, sizeof(buffer)) > 0)
+ buf = buffer;
+
/* if hwconfig is not enabled, or "sdram" is not defined, use spd */
- if (hwconfig_sub("fsl_ddr", "sdram")) {
- if (hwconfig_subarg_cmp("fsl_ddr", "sdram", "spd"))
+ if (hwconfig_sub_f("fsl_ddr", "sdram", buf)) {
+ if (hwconfig_subarg_cmp_f("fsl_ddr", "sdram", "spd", buf))
use_spd = 1;
- else if (hwconfig_subarg_cmp("fsl_ddr", "sdram", "fixed"))
+ else if (hwconfig_subarg_cmp_f("fsl_ddr", "sdram",
+ "fixed", buf))
use_spd = 0;
else
use_spd = 1;
generated by cgit v1.1 at 2024-12-14 23:57:56 +0000