This patch populates the scratchpad contents
as expected by the bootROM code.
Signed-off-by: Rajendra Nayak <rnayak@xxxxxx>
---
arch/arm/mach-omap2/control.c | 129 ++++++++++++++++++++++++++++++
arch/arm/mach-omap2/pm34xx.c | 2
arch/arm/plat-omap/include/mach/control.h | 69 ++++++++++++++++
3 files changed, 200 insertions(+)
Index: linux-omap-2.6/arch/arm/mach-omap2/control.c
===================================================================
--- linux-omap-2.6.orig/arch/arm/mach-omap2/control.c 2008-08-26
15:47:52.000000000 +0530
+++ linux-omap-2.6/arch/arm/mach-omap2/control.c 2008-08-26 17:02:55.000000000
+0530
@@ -17,6 +17,13 @@
#include <mach/common.h>
#include <mach/control.h>
+#include <mach/sdrc.h>
+#include "cm-regbits-34xx.h"
+#include "prm-regbits-34xx.h"
+#include "cm.h"
+#include "prm.h"
+#include "clock34xx.h"
+#include "sdrc.h"
static void __iomem *omap2_ctrl_base;
@@ -62,3 +69,125 @@ void omap_ctrl_writel(u32 val, u16 offse
__raw_writel(val, OMAP_CTRL_REGADDR(offset));
}
+#ifdef CONFIG_ARCH_OMAP3
+
+#define OMAP3430_PRM_RSTST \
+ OMAP34XX_PRM_REGADDR(OMAP3430_GR_MOD, RM_RSTST)
+/* Clears the scratchpad contents in case of cold boot-
+ called during bootup*/
+void omap3_clear_scratchpad_contents(void)
+{
+ u32 max_offset = OMAP343X_SCRATHPAD_ROM_OFFSET;
+ u32 offset = 0;
+ u32 v;
+ u32 v_addr = io_p2v(OMAP343X_SCRATCHPAD_ROM);
+ if (__raw_readl(OMAP3430_PRM_RSTST) & 0x1) {
+ for ( ; offset <= max_offset; offset += 0x4)
+ __raw_writel(0x0, (v_addr + offset));
+ v = __raw_readl(OMAP3430_PRM_RSTST);
+ v |= 0x1;
+ __raw_writel(v, OMAP3430_PRM_RSTST);
+ }
+}
+
+/* Populate the scratchpad structure with restore structure */
+void omap3_save_scratchpad_contents(void)
+{
+ u32 *scratchpad_address;
+ u32 *sdram_context_address;
+ struct omap3_scratchpad scratchpad_contents;
+ struct omap3_scratchpad_prcm_block prcm_block_contents;
+ struct omap3_scratchpad_sdrc_block sdrc_block_contents;
+
+ /* Populate the Scratchpad contents */
+ scratchpad_contents.boot_config_ptr = 0x0;
+ scratchpad_contents.public_restore_ptr =
+ (u32)((u32 *)virt_to_phys(get_restore_pointer()));
+ scratchpad_contents.secure_ram_restore_ptr = 0x0;
+ scratchpad_contents.sdrc_module_semaphore = 0x0;
+ scratchpad_contents.prcm_block_offset = 0x2C;
+ scratchpad_contents.sdrc_block_offset = 0x64;
+
+ /* Populate the PRCM block contents */
+ prcm_block_contents.prm_clksrc_ctrl =
+ __raw_readl(OMAP3430_PRM_CLKSRC_CTRL);
+ prcm_block_contents.prm_clksel =
+ __raw_readl(OMAP3430_PRM_CLKSEL);
+ prcm_block_contents.cm_clksel_core =
+ cm_read_mod_reg(CORE_MOD, CM_CLKSEL);
+ prcm_block_contents.cm_clksel_wkup =
+ cm_read_mod_reg(WKUP_MOD, CM_CLKSEL);
+ prcm_block_contents.cm_clken_pll =
+ cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKEN_PLL);
+ prcm_block_contents.cm_autoidle_pll =
+ cm_read_mod_reg(PLL_MOD, OMAP3430_CM_AUTOIDLE_PLL);
+ prcm_block_contents.cm_clksel1_pll =
+ cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL1_PLL);
+ prcm_block_contents.cm_clksel2_pll =
+ cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL2_PLL);
+ prcm_block_contents.cm_clksel3_pll =
+ cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL3);
+ prcm_block_contents.cm_clken_pll_mpu =
+ cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKEN_PLL);
+ prcm_block_contents.cm_autoidle_pll_mpu =
+ cm_read_mod_reg(MPU_MOD, OMAP3430_CM_AUTOIDLE_PLL);
+ prcm_block_contents.cm_clksel1_pll_mpu =
+ cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKSEL1_PLL);
+ prcm_block_contents.cm_clksel2_pll_mpu =
+ cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKSEL2_PLL);
+ prcm_block_contents.prcm_block_size = 0x0;
+
+ /* Populate the SDRC block contents */
+ sdrc_block_contents.sdrc_sysconfig =
+ (sdrc_read_reg(SDRC_SYSCONFIG) & 0xFFFF);
+ sdrc_block_contents.sdrc_cs_cfg =
+ (sdrc_read_reg(SDRC_CS_CFG) & 0xFFFF);
+ sdrc_block_contents.sdrc_sharing =
+ (sdrc_read_reg(SDRC_SHARING) & 0xFFFF);
+ sdrc_block_contents.sdrc_err_type =
+ (sdrc_read_reg(SDRC_ERR_TYPE) & 0xFFFF);
+ sdrc_block_contents.sdrc_dll_a_ctrl = sdrc_read_reg(SDRC_DLLA_CTRL);
+ sdrc_block_contents.sdrc_dll_b_ctrl = 0x0;
+ sdrc_block_contents.sdrc_power = sdrc_read_reg(SDRC_POWER);
+ sdrc_block_contents.sdrc_cs_0 = 0x0;
+ sdrc_block_contents.sdrc_mcfg_0 = sdrc_read_reg(SDRC_MCFG_0);
+ sdrc_block_contents.sdrc_mr_0 = (sdrc_read_reg(SDRC_MR_0) & 0xFFFF);
+ sdrc_block_contents.sdrc_emr_1_0 = 0x0;
+ sdrc_block_contents.sdrc_emr_2_0 = 0x0;
+ sdrc_block_contents.sdrc_emr_3_0 = 0x0;
+ sdrc_block_contents.sdrc_actim_ctrla_0 =
+ sdrc_read_reg(SDRC_ACTIM_CTRL_A_0);
+ sdrc_block_contents.sdrc_actim_ctrlb_0 =
+ sdrc_read_reg(SDRC_ACTIM_CTRL_B_0);
+ sdrc_block_contents.sdrc_rfr_ctrl_0 =
+ sdrc_read_reg(SDRC_RFR_CTRL_0);
+ sdrc_block_contents.sdrc_cs_1 = 0x0;
+ sdrc_block_contents.sdrc_mcfg_1 = sdrc_read_reg(SDRC_MCFG_1);
+ sdrc_block_contents.sdrc_mr_1 = sdrc_read_reg(SDRC_MR_1) & 0xFFFF;
+ sdrc_block_contents.sdrc_emr_1_1 = 0x0;
+ sdrc_block_contents.sdrc_emr_2_1 = 0x0;
+ sdrc_block_contents.sdrc_emr_3_1 = 0x0;
+ sdrc_block_contents.sdrc_actim_ctrla_1 =
+ sdrc_read_reg(SDRC_ACTIM_CTRL_A_1);
+ sdrc_block_contents.sdrc_actim_ctrlb_1 =
+ sdrc_read_reg(SDRC_ACTIM_CTRL_B_1);
+ sdrc_block_contents.sdrc_rfr_ctrl_1 =
+ sdrc_read_reg(SDRC_RFR_CTRL_1);
+ sdrc_block_contents.sdrc_dcdl_1_ctrl = 0x0;
+ sdrc_block_contents.sdrc_dcdl_2_ctrl = 0x0;
+ sdrc_block_contents.sdrc_flags = 0x0;
+ sdrc_block_contents.sdrc_block_size = 0x0;
+ sdrc_block_contents.sdrc_context_addr =
+ (u32)((u32 *)io_v2p(context_mem));
+
+ /* Copy all the contents to the scratchpad location*/
+ scratchpad_address = (u32 *)io_p2v(OMAP343X_SCRATCHPAD);
+ memcpy(scratchpad_address, &scratchpad_contents,
+ sizeof(scratchpad_contents));
+ memcpy(scratchpad_address + scratchpad_contents.prcm_block_offset/4,
+ &prcm_block_contents, sizeof(prcm_block_contents));
+ memcpy(scratchpad_address + scratchpad_contents.sdrc_block_offset/4,
+ &sdrc_block_contents, sizeof(sdrc_block_contents));
+}
+
+#endif /* CONFIG_ARCH_OMAP3 */
Index: linux-omap-2.6/arch/arm/plat-omap/include/mach/control.h
===================================================================
--- linux-omap-2.6.orig/arch/arm/plat-omap/include/mach/control.h 2008-08-26
15:47:52.000000000 +0530
+++ linux-omap-2.6/arch/arm/plat-omap/include/mach/control.h 2008-08-26
17:07:02.000000000 +0530
@@ -191,6 +191,10 @@
#define OMAP343X_SR1_SENPENABLE_MASK (0x3 << 0)
#define OMAP343X_SR1_SENPENABLE_SHIFT 0
+#define OMAP343X_SCRATCHPAD_ROM 0x48002860
+#define OMAP343X_SCRATCHPAD 0x48002910
+#define OMAP343X_SCRATHPAD_ROM_OFFSET 0x19C
+
#ifndef __ASSEMBLY__
#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
extern void __iomem *omap_ctrl_base_get(void);
@@ -200,6 +204,71 @@ extern u32 omap_ctrl_readl(u16 offset);
extern void omap_ctrl_writeb(u8 val, u16 offset);
extern void omap_ctrl_writew(u16 val, u16 offset);
extern void omap_ctrl_writel(u32 val, u16 offset);
+
+extern void omap3_save_scratchpad_contents(void);
+extern void omap3_clear_scratchpad_contents(void);
+extern u32 *get_restore_pointer(void);
+extern u32 context_mem[128];
+
+struct omap3_scratchpad {
+ u32 boot_config_ptr;
+ u32 public_restore_ptr;
+ u32 secure_ram_restore_ptr;
+ u32 sdrc_module_semaphore;
+ u32 prcm_block_offset;
+ u32 sdrc_block_offset;
+};
+
+struct omap3_scratchpad_prcm_block {
+ u32 prm_clksrc_ctrl;
+ u32 prm_clksel;
+ u32 cm_clksel_core;
+ u32 cm_clksel_wkup;
+ u32 cm_clken_pll;
+ u32 cm_autoidle_pll;
+ u32 cm_clksel1_pll;
+ u32 cm_clksel2_pll;
+ u32 cm_clksel3_pll;
+ u32 cm_clken_pll_mpu;
+ u32 cm_autoidle_pll_mpu;
+ u32 cm_clksel1_pll_mpu;
+ u32 cm_clksel2_pll_mpu;
+ u32 prcm_block_size;
+};
+
+struct omap3_scratchpad_sdrc_block {
+ u16 sdrc_sysconfig;
+ u16 sdrc_cs_cfg;
+ u16 sdrc_sharing;
+ u16 sdrc_err_type;
+ u32 sdrc_dll_a_ctrl;
+ u32 sdrc_dll_b_ctrl;
+ u32 sdrc_power;
+ u32 sdrc_cs_0;
+ u32 sdrc_mcfg_0;
+ u16 sdrc_mr_0;
+ u16 sdrc_emr_1_0;
+ u16 sdrc_emr_2_0;
+ u16 sdrc_emr_3_0;
+ u32 sdrc_actim_ctrla_0;
+ u32 sdrc_actim_ctrlb_0;
+ u32 sdrc_rfr_ctrl_0;
+ u32 sdrc_cs_1;
+ u32 sdrc_mcfg_1;
+ u16 sdrc_mr_1;
+ u16 sdrc_emr_1_1;
+ u16 sdrc_emr_2_1;
+ u16 sdrc_emr_3_1;
+ u32 sdrc_actim_ctrla_1;
+ u32 sdrc_actim_ctrlb_1;
+ u32 sdrc_rfr_ctrl_1;
+ u16 sdrc_dcdl_1_ctrl;
+ u16 sdrc_dcdl_2_ctrl;
+ u32 sdrc_flags;
+ u32 sdrc_block_size;
+ u32 sdrc_context_addr;
+};
+
#else
#define omap_ctrl_base_get() 0
#define omap_ctrl_readb(x) 0
Index: linux-omap-2.6/arch/arm/mach-omap2/pm34xx.c
===================================================================
--- linux-omap-2.6.orig/arch/arm/mach-omap2/pm34xx.c 2008-08-26
16:50:30.000000000 +0530
+++ linux-omap-2.6/arch/arm/mach-omap2/pm34xx.c 2008-08-26 17:00:21.000000000
+0530
@@ -57,6 +57,8 @@ static struct powerdomain *core_pwrdm, *
int set_pwrdm_state(struct powerdomain *pwrdm, u32 state);
+u32 context_mem[128];
+
/* XXX This is for gpio fclk hack. Will be removed as gpio driver
* handles fcks correctly */
#define NUM_OF_PERGPIOS 5
--
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