/*
* Push the minimal suspend-resume code to SRAM
*/
int am33xx_push_sram_idle(void)
{
am33xx_do_wfi_sram = (void *)fncpy((void *)ocmcram_location,
pm_sram->do_wfi,
*pm_sram->do_wfi_sz);
return 0;
}
int init_mmdc_lpddr2_settings(struct platform_device *busfreq_pdev)
{
unsigned long ddr_code_size;
busfreq_dev = &busfreq_pdev->dev;
ddr_code_size = (&imx6_lpddr2_freq_change_end -&imx6_lpddr2_freq_change_start) *4;
if (cpu_is_imx6sl())
mx6_change_lpddr2_freq = (void *)fncpy(
(void *)ddr_freq_change_iram_base,
&mx6_lpddr2_freq_change, ddr_code_size);
else if (cpu_is_imx6sx() || cpu_is_imx6ul())
mx6_change_lpddr2_freq = (void *)fncpy(
(void *)ddr_freq_change_iram_base,
&imx6_up_lpddr2_freq_change, ddr_code_size);
curr_ddr_rate = ddr_normal_rate;
return 0;
}
int main(int argc, char **argv)
{
FILE *fp;
char filename[32] = {0};
u32 dir_off, dir_nmemb;
unsigned int i;
if(argc != 2 || strequ("-h", argv[1]) || strequ("--help", argv[1]))
{
fputs("dumps the objects in a gbfs file to separate files\n"
"syntax: ungbfs FILE\n", stderr);
return 1;
}
fp = fopen(argv[1], "rb");
if(!fp)
{
fputs("could not open ", stderr);
perror(argv[1]);
return 1;
}
/* read pertinent header fields */
fseek(fp, 20, SEEK_SET);
dir_off = fgeti16(fp);
dir_nmemb = fgeti16(fp);
for(i = 0; i < dir_nmemb; i++)
{
unsigned long len, off;
FILE *outfile;
fseek(fp, dir_off + 32 * i, SEEK_SET);
fread(filename, 24, 1, fp);
len = fgeti32(fp);
off = fgeti32(fp);
printf("%10lu %s\n", (unsigned long)len, filename);
outfile = fopen(filename, "wb");
if(!outfile)
{
fputs("could not open ", stderr);
perror(filename);
fclose(fp);
return 1;
}
fseek(fp, off, SEEK_SET);
fncpy(outfile, fp, len);
fclose(outfile);
}
fclose(fp);
return 0;
}
void machine_kexec(struct kimage *image)
{
unsigned long page_list;
unsigned long reboot_code_buffer_phys;
unsigned long reboot_entry = (unsigned long)relocate_new_kernel;
unsigned long reboot_entry_phys;
void *reboot_code_buffer;
if (num_online_cpus() > 1) {
pr_err("kexec: error: multiple CPUs still online\n");
return;
}
page_list = image->head & PAGE_MASK;
/* we need both effective and real address here */
reboot_code_buffer_phys =
page_to_pfn(image->control_code_page) << PAGE_SHIFT;
reboot_code_buffer = page_address(image->control_code_page);
/* Prepare parameters for reboot_code_buffer*/
mem_text_write_kernel_word(&kexec_start_address, image->start);
mem_text_write_kernel_word(&kexec_indirection_page, page_list);
mem_text_write_kernel_word(&kexec_mach_type, machine_arch_type);
if (!kexec_boot_atags)
mem_text_write_kernel_word(&kexec_boot_atags, image->start - KEXEC_ARM_ZIMAGE_OFFSET + KEXEC_ARM_ATAGS_OFFSET);
#ifdef CONFIG_KEXEC_HARDBOOT
mem_text_write_kernel_word(&kexec_hardboot, image->hardboot);
#endif
/* copy our kernel relocation code to the control code page */
reboot_entry = fncpy(reboot_code_buffer,
reboot_entry,
relocate_new_kernel_size);
reboot_entry_phys = (unsigned long)reboot_entry +
(reboot_code_buffer_phys - (unsigned long)reboot_code_buffer);
printk(KERN_INFO "Bye!\n");
if (kexec_reinit)
kexec_reinit();
#ifdef CONFIG_KEXEC_HARDBOOT
/* Run any final machine-specific shutdown code. */
if (image->hardboot && kexec_hardboot_hook)
kexec_hardboot_hook();
#endif
soft_restart(reboot_code_buffer_phys);
}
void machine_kexec(struct kimage *image)
{
unsigned long page_list;
unsigned long reboot_code_buffer_phys;
unsigned long reboot_entry = (unsigned long)relocate_new_kernel;
unsigned long reboot_entry_phys;
void *reboot_code_buffer;
/*
* This can only happen if machine_shutdown() failed to disable some
* CPU, and that can only happen if the checks in
* machine_kexec_prepare() were not correct. If this fails, we can't
* reliably kexec anyway, so BUG_ON is appropriate.
*/
BUG_ON(num_online_cpus() > 1);
page_list = image->head & PAGE_MASK;
/* we need both effective and real address here */
reboot_code_buffer_phys =
page_to_pfn(image->control_code_page) << PAGE_SHIFT;
reboot_code_buffer = page_address(image->control_code_page);
/* Prepare parameters for reboot_code_buffer*/
set_kernel_text_rw();
kexec_start_address = image->start;
kexec_indirection_page = page_list;
kexec_mach_type = machine_arch_type;
kexec_boot_atags = dt_mem ?: image->start - KEXEC_ARM_ZIMAGE_OFFSET
+ KEXEC_ARM_ATAGS_OFFSET;
/* copy our kernel relocation code to the control code page */
reboot_entry = fncpy(reboot_code_buffer,
reboot_entry,
relocate_new_kernel_size);
reboot_entry_phys = (unsigned long)reboot_entry +
(reboot_code_buffer_phys - (unsigned long)reboot_code_buffer);
pr_info("Bye!\n");
if (kexec_reinit)
kexec_reinit();
soft_restart(reboot_entry_phys);
}
void machine_kexec(struct kimage *image)
{
unsigned long page_list;
unsigned long reboot_code_buffer_phys;
unsigned long reboot_entry = (unsigned long)relocate_new_kernel;
unsigned long reboot_entry_phys;
void *reboot_code_buffer;
if (num_online_cpus() > 1) {
pr_err("kexec: error: multiple CPUs still online\n");
return;
}
page_list = image->head & PAGE_MASK;
/* we need both effective and real address here */
reboot_code_buffer_phys =
page_to_pfn(image->control_code_page) << PAGE_SHIFT;
reboot_code_buffer = page_address(image->control_code_page);
/* Prepare parameters for reboot_code_buffer*/
kexec_start_address = image->start;
kexec_indirection_page = page_list;
kexec_mach_type = machine_arch_type;
if (!kexec_boot_atags)
kexec_boot_atags = image->start - KEXEC_ARM_ZIMAGE_OFFSET + KEXEC_ARM_ATAGS_OFFSET;
/* copy our kernel relocation code to the control code page */
reboot_entry = fncpy(reboot_code_buffer,
reboot_entry,
relocate_new_kernel_size);
reboot_entry_phys = (unsigned long)reboot_entry +
(reboot_code_buffer_phys - (unsigned long)reboot_code_buffer);
printk(KERN_INFO "Bye!\n");
if (kexec_reinit)
kexec_reinit();
soft_restart(reboot_entry_phys);
}
static int ti_emif_push_sram(struct device *dev)
{
struct device_node *np = dev->of_node;
sram_pool = of_gen_pool_get(np, "sram", 0);
if (!sram_pool) {
dev_err(dev, "Unable to get sram pool for ocmcram\n");
return -ENODEV;
}
ocmcram_location = gen_pool_alloc(sram_pool, ti_emif_sram_sz);
if (!ocmcram_location) {
dev_err(dev, "Unable to allocate memory from ocmcram\n");
return -EINVAL;
}
/* Save physical address to calculate resume offset during pm init */
ti_emif_sram_phys = gen_pool_virt_to_phys(sram_pool,
ocmcram_location);
ti_emif_sram_virt = fncpy((void *)ocmcram_location,
&ti_emif_sram,
ti_emif_sram_sz);
/*
* These functions are called during suspend path while MMU is
* still on so add virtual base to offset for absolute address
*/
ti_emif_pm.save_context = sram_suspend_address(ti_emif_pm.save_context);
ti_emif_pm.enter_sr = sram_suspend_address(ti_emif_pm.enter_sr);
ti_emif_pm.abort_sr = sram_suspend_address(ti_emif_pm.abort_sr);
/*
* These are called during resume path when MMU is not enabled
* so physical address is used instead
*/
ti_emif_pm.restore_context =
sram_resume_address(ti_emif_pm.restore_context);
ti_emif_pm.exit_sr = sram_resume_address(ti_emif_pm.exit_sr);
return 0;
}
int init_mmdc_lpddr2_settings(struct platform_device *busfreq_pdev)
{
struct platform_device *ocram_dev;
unsigned int iram_paddr;
struct device_node *node;
struct gen_pool *iram_pool;
busfreq_dev = &busfreq_pdev->dev;
node = of_find_compatible_node(NULL, NULL, "fsl,imx6sl-mmdc");
if (!node) {
printk(KERN_ERR "failed to find imx6sl-mmdc device tree data!\n");
return -EINVAL;
}
mmdc_base = of_iomap(node, 0);
WARN(!mmdc_base, "unable to map mmdc registers\n");
node = NULL;
node = of_find_compatible_node(NULL, NULL, "fsl,imx6sl-ccm");
if (!node) {
printk(KERN_ERR "failed to find imx6sl-ccm device tree data!\n");
return -EINVAL;
}
ccm_base = of_iomap(node, 0);
WARN(!ccm_base, "unable to map ccm registers\n");
node = of_find_compatible_node(NULL, NULL, "arm,pl310-cache");
if (!node) {
printk(KERN_ERR "failed to find imx6sl-pl310-cache device tree data!\n");
return -EINVAL;
}
l2_base = of_iomap(node, 0);
WARN(!l2_base, "unable to map PL310 registers\n");
node = of_find_compatible_node(NULL, NULL, "fsl,imx6sl-anatop");
if (!node) {
printk(KERN_ERR "failed to find imx6sl-pl310-cache device tree data!\n");
return -EINVAL;
}
anatop_base = of_iomap(node, 0);
WARN(!anatop_base, "unable to map anatop registers\n");
node = NULL;
node = of_find_compatible_node(NULL, NULL, "mmio-sram");
if (!node) {
dev_err(busfreq_dev, "%s: failed to find ocram node\n",
__func__);
return -EINVAL;
}
ocram_dev = of_find_device_by_node(node);
if (!ocram_dev) {
dev_err(busfreq_dev, "failed to find ocram device!\n");
return -EINVAL;
}
iram_pool = dev_get_gen_pool(&ocram_dev->dev);
if (!iram_pool) {
dev_err(busfreq_dev, "iram pool unavailable!\n");
return -EINVAL;
}
reg_addrs[0] = (unsigned long)anatop_base;
reg_addrs[1] = (unsigned long)ccm_base;
reg_addrs[2] = (unsigned long)mmdc_base;
reg_addrs[3] = (unsigned long)l2_base;
ddr_freq_change_iram_base = (void *)gen_pool_alloc(iram_pool,
LPDDR2_FREQ_CHANGE_SIZE);
if (!ddr_freq_change_iram_base) {
dev_err(busfreq_dev,
"Cannot alloc iram for ddr freq change code!\n");
return -ENOMEM;
}
iram_paddr = gen_pool_virt_to_phys(iram_pool,
(unsigned long)ddr_freq_change_iram_base);
/*
* Need to remap the area here since we want
* the memory region to be executable.
*/
ddr_freq_change_iram_base = __arm_ioremap(iram_paddr,
LPDDR2_FREQ_CHANGE_SIZE,
MT_MEMORY_NONCACHED);
mx6_change_lpddr2_freq = (void *)fncpy(ddr_freq_change_iram_base,
&mx6_lpddr2_freq_change, LPDDR2_FREQ_CHANGE_SIZE);
curr_ddr_rate = ddr_normal_rate;
return 0;
}
int init_mmdc_settings(struct platform_device *busfreq_pdev)
{
struct device *dev = &busfreq_pdev->dev;
struct platform_device *ocram_dev;
unsigned int iram_paddr;
int i, err;
u32 cpu;
struct device_node *node;
struct gen_pool *iram_pool;
node = of_find_compatible_node(NULL, NULL, "fsl,imx6q-mmdc-combine");
if (!node) {
printk(KERN_ERR "failed to find imx6q-mmdc device tree data!\n");
return -EINVAL;
}
mmdc_base = of_iomap(node, 0);
WARN(!mmdc_base, "unable to map mmdc registers\n");
node = NULL;
if (cpu_is_imx6q())
node = of_find_compatible_node(NULL, NULL, "fsl,imx6q-iomuxc");
if (cpu_is_imx6dl())
node = of_find_compatible_node(NULL, NULL,
"fsl,imx6dl-iomuxc");
if (!node) {
printk(KERN_ERR "failed to find imx6q-iomux device tree data!\n");
return -EINVAL;
}
iomux_base = of_iomap(node, 0);
WARN(!iomux_base, "unable to map iomux registers\n");
node = of_find_compatible_node(NULL, NULL, "fsl,imx6q-ccm");
if (!node) {
printk(KERN_ERR "failed to find imx6q-ccm device tree data!\n");
return -EINVAL;
}
ccm_base = of_iomap(node, 0);
WARN(!mmdc_base, "unable to map mmdc registers\n");
node = of_find_compatible_node(NULL, NULL, "arm,pl310-cache");
if (!node) {
printk(KERN_ERR "failed to find imx6q-pl310-cache device tree data!\n");
return -EINVAL;
}
l2_base = of_iomap(node, 0);
WARN(!mmdc_base, "unable to map mmdc registers\n");
node = NULL;
node = of_find_compatible_node(NULL, NULL, "arm,cortex-a9-gic");
if (!node) {
printk(KERN_ERR "failed to find imx6q-a9-gic device tree data!\n");
return -EINVAL;
}
gic_dist_base = of_iomap(node, 0);
WARN(!gic_dist_base, "unable to map gic dist registers\n");
if (cpu_is_imx6q())
ddr_settings_size = ARRAY_SIZE(ddr3_dll_mx6q) +
ARRAY_SIZE(ddr3_calibration);
if (cpu_is_imx6dl())
ddr_settings_size = ARRAY_SIZE(ddr3_dll_mx6dl) +
ARRAY_SIZE(ddr3_calibration);
normal_mmdc_settings = kmalloc((ddr_settings_size * 8), GFP_KERNEL);
if (cpu_is_imx6q()) {
memcpy(normal_mmdc_settings, ddr3_dll_mx6q,
sizeof(ddr3_dll_mx6q));
memcpy(((char *)normal_mmdc_settings + sizeof(ddr3_dll_mx6q)),
ddr3_calibration, sizeof(ddr3_calibration));
}
if (cpu_is_imx6dl()) {
memcpy(normal_mmdc_settings, ddr3_dll_mx6dl,
sizeof(ddr3_dll_mx6dl));
memcpy(((char *)normal_mmdc_settings + sizeof(ddr3_dll_mx6dl)),
ddr3_calibration, sizeof(ddr3_calibration));
}
/* store the original DDR settings at boot. */
for (i = 0; i < ddr_settings_size; i++) {
/*
* writes via command mode register cannot be read back.
* hence hardcode them in the initial static array.
* this may require modification on a per customer basis.
*/
if (normal_mmdc_settings[i][0] != 0x1C)
normal_mmdc_settings[i][1] =
readl_relaxed(mmdc_base
+ normal_mmdc_settings[i][0]);
}
irqs_used = devm_kzalloc(dev, sizeof(u32) * num_present_cpus(),
GFP_KERNEL);
for_each_present_cpu(cpu) {
int irq;
/*
* set up a reserved interrupt to get all
* the active cores into a WFE state
* before changing the DDR frequency.
*/
irq = platform_get_irq(busfreq_pdev, cpu);
err = request_irq(irq, wait_in_wfe_irq,
IRQF_PERCPU, "mmdc_1", NULL);
if (err) {
dev_err(dev,
"Busfreq:request_irq failed %d, err = %d\n",
irq, err);
return err;
}
err = irq_set_affinity(irq, cpumask_of(cpu));
if (err) {
dev_err(dev,
"Busfreq: Cannot set irq affinity irq=%d,\n",
irq);
return err;
}
irqs_used[cpu] = irq;
}
node = NULL;
node = of_find_compatible_node(NULL, NULL, "mmio-sram");
if (!node) {
dev_err(dev, "%s: failed to find ocram node\n",
__func__);
return -EINVAL;
}
ocram_dev = of_find_device_by_node(node);
if (!ocram_dev) {
dev_err(dev, "failed to find ocram device!\n");
return -EINVAL;
}
iram_pool = dev_get_gen_pool(&ocram_dev->dev);
if (!iram_pool) {
dev_err(dev, "iram pool unavailable!\n");
return -EINVAL;
}
iomux_settings_size = ARRAY_SIZE(iomux_offsets_mx6q);
iram_iomux_settings = gen_pool_alloc(iram_pool,
(iomux_settings_size * 8) + 8);
if (!iram_iomux_settings) {
dev_err(dev, "unable to alloc iram for IOMUX settings!\n");
return -ENOMEM;
}
/*
* Allocate extra space to store the number of entries in the
* ddr_settings plus 4 extra regsiter information that needs
* to be passed to the frequency change code.
* sizeof(iram_ddr_settings) = sizeof(ddr_settings) +
* entries in ddr_settings + 16.
* The last 4 enties store the addresses of the registers:
* CCM_BASE_ADDR
* MMDC_BASE_ADDR
* IOMUX_BASE_ADDR
* L2X0_BASE_ADDR
*/
iram_ddr_settings = gen_pool_alloc(iram_pool,
(ddr_settings_size * 8) + 8 + 32);
if (!iram_ddr_settings) {
dev_err(dev, "unable to alloc iram for ddr settings!\n");
return -ENOMEM;
}
i = ddr_settings_size + 1;
iram_ddr_settings[i][0] = (unsigned long)mmdc_base;
iram_ddr_settings[i+1][0] = (unsigned long)ccm_base;
iram_ddr_settings[i+2][0] = (unsigned long)iomux_base;
iram_ddr_settings[i+3][0] = (unsigned long)l2_base;
if (cpu_is_imx6q()) {
/* store the IOMUX settings at boot. */
for (i = 0; i < iomux_settings_size; i++) {
iomux_offsets_mx6q[i][1] =
readl_relaxed(iomux_base +
iomux_offsets_mx6q[i][0]);
iram_iomux_settings[i+1][0] = iomux_offsets_mx6q[i][0];
iram_iomux_settings[i+1][1] = iomux_offsets_mx6q[i][1];
}
}
if (cpu_is_imx6dl()) {
for (i = 0; i < iomux_settings_size; i++) {
iomux_offsets_mx6dl[i][1] =
readl_relaxed(iomux_base +
iomux_offsets_mx6dl[i][0]);
iram_iomux_settings[i+1][0] = iomux_offsets_mx6dl[i][0];
iram_iomux_settings[i+1][1] = iomux_offsets_mx6dl[i][1];
}
}
ddr_freq_change_iram_base = gen_pool_alloc(iram_pool,
DDR_FREQ_CHANGE_SIZE);
if (!ddr_freq_change_iram_base) {
dev_err(dev, "Cannot alloc iram for ddr freq change code!\n");
return -ENOMEM;
}
iram_paddr = gen_pool_virt_to_phys(iram_pool,
(unsigned long)ddr_freq_change_iram_base);
/*
* need to remap the area here since we want
* the memory region to be executable.
*/
ddr_freq_change_iram_base = __arm_ioremap(iram_paddr,
DDR_FREQ_CHANGE_SIZE,
MT_MEMORY_RWX_NONCACHED);
mx6_change_ddr_freq = (void *)fncpy(ddr_freq_change_iram_base,
&mx6_ddr3_freq_change, DDR_FREQ_CHANGE_SIZE);
curr_ddr_rate = ddr_normal_rate;
return 0;
}