--- /dev/null
+/*
+ * (C) Copyright 2010 - 2011
+ * NVIDIA Corporation <www.nvidia.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/errno.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/emc.h>
+#include <asm/arch/gp_padctrl.h>
+#include <asm/arch/pinmux.h>
+#include <asm/arch/sdram_param.h>
+#include <asm/arch/tegra.h>
+#include <asm/arch-tegra/ap.h>
+#include <asm/arch-tegra/apb_misc.h>
+#include <asm/arch-tegra/clk_rst.h>
+#include <asm/arch-tegra/pmc.h>
+#include <asm/arch-tegra/fuse.h>
+#include <asm/arch-tegra/warmboot.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifndef CONFIG_TEGRA_CLOCK_SCALING
+#error "You must enable CONFIG_TEGRA_CLOCK_SCALING to use CONFIG_TEGRA_LP0"
+#endif
+
+/*
+ * This is the place in SRAM where the SDRAM parameters are stored. There
+ * are 4 blocks, one for each RAM code
+ */
+#define SDRAM_PARAMS_BASE (NV_PA_BASE_SRAM + 0x188)
+
+/* TODO: If we later add support for the Misc GP controller, refactor this */
+union xm2cfga_reg {
+ struct {
+ u32 reserved0:2;
+ u32 hsm_en:1;
+ u32 reserved1:2;
+ u32 preemp_en:1;
+ u32 vref_en:1;
+ u32 reserved2:5;
+ u32 cal_drvdn:5;
+ u32 reserved3:3;
+ u32 cal_drvup:5;
+ u32 reserved4:3;
+ u32 cal_drvdn_slwr:2;
+ u32 cal_drvup_slwf:2;
+ };
+ u32 word;
+};
+
+union xm2cfgd_reg {
+ struct {
+ u32 reserved0:2;
+ u32 hsm_en:1;
+ u32 schmt_en:1;
+ u32 lpmd:2;
+ u32 vref_en:1;
+ u32 reserved1:5;
+ u32 cal_drvdn:5;
+ u32 reserved2:3;
+ u32 cal_drvup:5;
+ u32 reserved3:3;
+ u32 cal_drvdn_slwr:2;
+ u32 cal_drvup_slwf:2;
+ };
+ u32 word;
+};
+
+/*
+ * TODO: This register is not documented in the TRM yet. We could move this
+ * into the EMC and give it a proper interface, but not while it is
+ * undocumented.
+ */
+union fbio_spare_reg {
+ struct {
+ u32 reserved:24;
+ u32 cfg_wb0:8;
+ };
+ u32 word;
+};
+
+/* We pack the resume information into these unions for later */
+union scratch2_reg {
+ struct {
+ u32 pllm_base_divm:5;
+ u32 pllm_base_divn:10;
+ u32 pllm_base_divp:3;
+ u32 pllm_misc_lfcon:4;
+ u32 pllm_misc_cpcon:4;
+ u32 gp_xm2cfga_padctrl_preemp:1;
+ u32 gp_xm2cfgd_padctrl_schmt:1;
+ u32 osc_ctrl_xobp:1;
+ u32 memory_type:3;
+ };
+ u32 word;
+};
+
+union scratch4_reg {
+ struct {
+ u32 emc_clock_divider:8;
+ u32 pllm_stable_time:8;
+ u32 pllx_stable_time:8;
+ u32 emc_fbio_spare_cfg_wb0:8;
+ };
+ u32 word;
+};
+
+union scratch24_reg {
+ struct {
+ u32 emc_auto_cal_wait:8;
+ u32 emc_pin_program_wait:8;
+ u32 warmboot_wait:8;
+ u32 reserved:8;
+ };
+ u32 word;
+};
+
+int warmboot_save_sdram_params(void)
+{
+ u32 ram_code;
+ struct sdram_params sdram;
+ struct apb_misc_pp_ctlr *apb_misc =
+ (struct apb_misc_pp_ctlr *)NV_PA_APB_MISC_BASE;
+ struct pmc_ctlr *pmc = (struct pmc_ctlr *)NV_PA_PMC_BASE;
+ struct apb_misc_gp_ctlr *gp =
+ (struct apb_misc_gp_ctlr *)NV_PA_APB_MISC_GP_BASE;
+ struct emc_ctlr *emc = emc_get_controller(gd->fdt_blob);
+ union scratch2_reg scratch2;
+ union scratch4_reg scratch4;
+ union scratch24_reg scratch24;
+ union xm2cfga_reg xm2cfga;
+ union xm2cfgd_reg xm2cfgd;
+ union fbio_spare_reg fbio_spare;
+
+ /* get ram code that is used as index to array sdram_params in BCT */
+ ram_code = (readl(&apb_misc->strapping_opt_a) >>
+ STRAP_OPT_A_RAM_CODE_SHIFT) & 3;
+ memcpy(&sdram,
+ (char *)((struct sdram_params *)SDRAM_PARAMS_BASE + ram_code),
+ sizeof(sdram));
+
+ xm2cfga.word = readl(&gp->xm2cfga);
+ xm2cfgd.word = readl(&gp->xm2cfgd);
+
+ scratch2.word = 0;
+ scratch2.osc_ctrl_xobp = clock_get_osc_bypass();
+
+ /* Get the memory PLL settings */
+ {
+ u32 divm, divn, divp, cpcon, lfcon;
+
+ if (clock_ll_read_pll(CLOCK_ID_MEMORY, &divm, &divn, &divp,
+ &cpcon, &lfcon))
+ return -1;
+ scratch2.pllm_base_divm = divm;
+ scratch2.pllm_base_divn = divn;
+ scratch2.pllm_base_divp = divp;
+ scratch2.pllm_misc_cpcon = cpcon;
+ scratch2.pllm_misc_lfcon = lfcon;
+ }
+
+ scratch2.gp_xm2cfga_padctrl_preemp = xm2cfga.preemp_en;
+ scratch2.gp_xm2cfgd_padctrl_schmt = xm2cfgd.schmt_en;
+ scratch2.memory_type = sdram.memory_type;
+ writel(scratch2.word, &pmc->pmc_scratch2);
+
+ /* collect data from various sources for pmc_scratch4 */
+ fbio_spare.word = readl(&emc->fbio_spare);
+ scratch4.word = 0;
+ scratch4.emc_fbio_spare_cfg_wb0 = fbio_spare.cfg_wb0;
+ scratch4.emc_clock_divider = sdram.emc_clock_divider;
+ scratch4.pllm_stable_time = -1;
+ scratch4.pllx_stable_time = -1;
+ writel(scratch4.word, &pmc->pmc_scratch4);
+
+ /* collect various data from sdram for pmc_scratch24 */
+ scratch24.word = 0;
+ scratch24.emc_pin_program_wait = sdram.emc_pin_program_wait;
+ scratch24.emc_auto_cal_wait = sdram.emc_auto_cal_wait;
+ scratch24.warmboot_wait = sdram.warm_boot_wait;
+ writel(scratch24.word, &pmc->pmc_scratch24);
+
+ return 0;
+}
+
+static u32 get_major_version(void)
+{
+ u32 major_id;
+ struct apb_misc_gp_ctlr *gp =
+ (struct apb_misc_gp_ctlr *)NV_PA_APB_MISC_GP_BASE;
+
+ major_id = (readl(&gp->hidrev) & HIDREV_MAJORPREV_MASK) >>
+ HIDREV_MAJORPREV_SHIFT;
+ return major_id;
+}
+
+static int is_production_mode_fuse_set(struct fuse_regs *fuse)
+{
+ return readl(&fuse->production_mode);
+}
+
+static int is_odm_production_mode_fuse_set(struct fuse_regs *fuse)
+{
+ return readl(&fuse->security_mode);
+}
+
+static int is_failure_analysis_mode(struct fuse_regs *fuse)
+{
+ return readl(&fuse->fa);
+}
+
+static int ap20_is_odm_production_mode(void)
+{
+ struct fuse_regs *fuse = (struct fuse_regs *)NV_PA_FUSE_BASE;
+
+ if (!is_failure_analysis_mode(fuse) &&
+ is_odm_production_mode_fuse_set(fuse))
+ return 1;
+ else
+ return 0;
+}
+
+static int ap20_is_production_mode(void)
+{
+ struct fuse_regs *fuse = (struct fuse_regs *)NV_PA_FUSE_BASE;
+
+ if (get_major_version() == 0)
+ return 1;
+
+ if (!is_failure_analysis_mode(fuse) &&
+ is_production_mode_fuse_set(fuse) &&
+ !is_odm_production_mode_fuse_set(fuse))
+ return 1;
+ else
+ return 0;
+}
+
+static enum fuse_operating_mode fuse_get_operation_mode(void)
+{
+ u32 chip_id;
+ struct apb_misc_gp_ctlr *gp =
+ (struct apb_misc_gp_ctlr *)NV_PA_APB_MISC_GP_BASE;
+
+ chip_id = (readl(&gp->hidrev) & HIDREV_CHIPID_MASK) >>
+ HIDREV_CHIPID_SHIFT;
+ if (chip_id == CHIPID_TEGRA20) {
+ if (ap20_is_odm_production_mode()) {
+ printf("!! odm_production_mode is not supported !!\n");
+ return MODE_UNDEFINED;
+ } else
+ if (ap20_is_production_mode())
+ return MODE_PRODUCTION;
+ else
+ return MODE_UNDEFINED;
+ }
+ return MODE_UNDEFINED;
+}
+
+static void determine_crypto_options(int *is_encrypted, int *is_signed,
+ int *use_zero_key)
+{
+ switch (fuse_get_operation_mode()) {
+ case MODE_PRODUCTION:
+ *is_encrypted = 0;
+ *is_signed = 1;
+ *use_zero_key = 1;
+ break;
+ case MODE_UNDEFINED:
+ default:
+ *is_encrypted = 0;
+ *is_signed = 0;
+ *use_zero_key = 0;
+ break;
+ }
+}
+
+static int sign_wb_code(u32 start, u32 length, int use_zero_key)
+{
+ int err;
+ u8 *source; /* Pointer to source */
+ u8 *hash;
+
+ /* Calculate AES block parameters. */
+ source = (u8 *)(start + offsetof(struct wb_header, random_aes_block));
+ length -= offsetof(struct wb_header, random_aes_block);
+ hash = (u8 *)(start + offsetof(struct wb_header, hash));
+ err = sign_data_block(source, length, hash);
+
+ return err;
+}
+
+int warmboot_prepare_code(u32 seg_address, u32 seg_length)
+{
+ int err = 0;
+ u32 length; /* length of the signed/encrypt code */
+ struct wb_header *dst_header; /* Pointer to dest WB header */
+ int is_encrypted; /* Segment is encrypted */
+ int is_signed; /* Segment is signed */
+ int use_zero_key; /* Use key of all zeros */
+
+ /* Determine crypto options. */
+ determine_crypto_options(&is_encrypted, &is_signed, &use_zero_key);
+
+ /* Get the actual code limits. */
+ length = roundup(((u32)wb_end - (u32)wb_start), 16);
+
+ /*
+ * The region specified by seg_address must be in SDRAM and must be
+ * nonzero in length.
+ */
+ if (seg_length == 0 || seg_address < NV_PA_SDRAM_BASE ||
+ seg_address + seg_length >= NV_PA_SDRAM_BASE + gd->ram_size) {
+ err = -EFAULT;
+ goto fail;
+ }
+
+ /* Things must be 16-byte aligned. */
+ if ((seg_length & 0xF) || (seg_address & 0xF)) {
+ err = -EINVAL;
+ goto fail;
+ }
+
+ /* Will the code fit? (destination includes wb_header + wb code) */
+ if (seg_length < (length + sizeof(struct wb_header))) {
+ err = -EINVAL;
+ goto fail;
+ }
+
+ dst_header = (struct wb_header *)seg_address;
+ memset((char *)dst_header, 0, sizeof(struct wb_header));
+
+ /* Populate the random_aes_block as requested. */
+ {
+ u32 *aes_block = (u32 *)&(dst_header->random_aes_block);
+ u32 *end = (u32 *)(((u32)aes_block) +
+ sizeof(dst_header->random_aes_block));
+
+ do {
+ *aes_block++ = 0;
+ } while (aes_block < end);
+ }
+
+ /* Populate the header. */
+ dst_header->length_insecure = length + sizeof(struct wb_header);
+ dst_header->length_secure = length + sizeof(struct wb_header);
+ dst_header->destination = NV_WB_RUN_ADDRESS;
+ dst_header->entry_point = NV_WB_RUN_ADDRESS;
+ dst_header->code_length = length;
+
+ if (is_encrypted) {
+ printf("!!!! Encryption is not supported !!!!\n");
+ dst_header->length_insecure = 0;
+ err = -EACCES;
+ goto fail;
+ } else
+ /* copy the wb code directly following dst_header. */
+ memcpy((char *)(dst_header+1), (char *)wb_start, length);
+
+ if (is_signed)
+ err = sign_wb_code(seg_address, dst_header->length_insecure,
+ use_zero_key);
+
+fail:
+ if (err)
+ printf("Warning: warmboot code copy failed (error=%d)\n", err);
+
+ return err;
+}
Code Review / kvmfornfv.git / blobdiff